{"cik":1018164,"company":{"entity_status":null,"filings":[{"accession":"0002070403-26-000015","document":"xslF345X06/wk-form4_1790962937.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0001018164-26-000082","document":"wlfc-20260924.htm","filed":"2026-09-30","form":"8-K","items":"5.03,9.01","report_date":"2026-09-24"},{"accession":"0001018164-26-000078","document":"wlfc-20260916.htm","filed":"2026-09-22","form":"8-K","items":"3.02,9.01","report_date":"2026-09-16"},{"accession":"0001676532-26-000012","document":"xslF345X06/wk-form4_1789506774.xml","filed":"2026-09-15","form":"4","items":"","report_date":"2026-09-11"},{"accession":"0001018164-26-000074","document":"wlfc-20260908.htm","filed":"2026-09-08","form":"8-K","items":"7.01,9.01","report_date":"2026-09-08"},{"accession":"0000905148-26-004074","document":"xslF345X06/form4.xml","filed":"2026-09-03","form":"4","items":"","report_date":"2026-09-01"},{"accession":"0000905148-26-004063","document":"xslF345X06/form4.xml","filed":"2026-09-02","form":"4","items":"","report_date":"2026-08-31"},{"accession":"0000905148-26-003969","document":"xslF345X06/form4.xml","filed":"2026-08-27","form":"4","items":"","report_date":"2026-08-25"},{"accession":"0001018164-26-000072","document":"wlfc-20260824.htm","filed":"2026-08-25","form":"8-K","items":"2.01,7.01,9.01","report_date":"2026-08-24"},{"accession":"0000905148-26-003886","document":"xslF345X06/form4.xml","filed":"2026-08-24","form":"4","items":"","report_date":"2026-08-20"},{"accession":"0000905148-26-003820","document":"xslF345X06/form4.xml","filed":"2026-08-19","form":"4","items":"","report_date":"2026-08-17"},{"accession":"0002070403-26-000013","document":"xslF345X06/wk-form4_1786973720.xml","filed":"2026-08-17","form":"4","items":"","report_date":"2026-08-14"},{"accession":"0001018164-26-000070","document":"wlfc-20260803.htm","filed":"2026-08-06","form":"8-K","items":"1.01","report_date":"2026-08-03"},{"accession":"0001018164-26-000068","document":"wlfc-20260630.htm","filed":"2026-08-04","form":"10-Q","items":"","report_date":"2026-06-30"},{"accession":"0001018164-26-000065","document":"wlfc-20260804.htm","filed":"2026-08-04","form":"8-K","items":"2.02,9.01","report_date":"2026-08-04"},{"accession":"0001018164-26-000063","document":"wlfc-20260729.htm","filed":"2026-07-30","form":"8-K","items":"8.01,9.01","report_date":"2026-07-29"},{"accession":"0001018164-26-000061","document":"wlfc-20260721.htm","filed":"2026-07-21","form":"8-K","items":"7.01,9.01","report_date":"2026-07-21"},{"accession":"0001193125-26-307870","document":"d85905d8k.htm","filed":"2026-07-17","form":"8-K","items":"5.03,9.01","report_date":"2026-07-17"},{"accession":"0001018164-26-000058","document":"wlfc-20260710.htm","filed":"2026-07-14","form":"8-K","items":"1.01,7.01,9.01","report_date":"2026-07-10"},{"accession":"0001193125-26-300912","document":"d142690d8k.htm","filed":"2026-07-10","form":"8-K","items":"8.01","report_date":"2026-07-06"},{"accession":"0001193125-26-279754","document":"d129925d8k.htm","filed":"2026-06-23","form":"8-K","items":"5.07,8.01,9.01","report_date":"2026-06-23"},{"accession":"0001193125-26-242158","document":"d129553d8k.htm","filed":"2026-05-27","form":"8-K","items":"5.07","report_date":"2026-05-26"},{"accession":"0001193125-26-228878","document":"d135974d8k.htm","filed":"2026-05-18","form":"8-K","items":"1.01,2.03,9.01","report_date":"2026-05-18"},{"accession":"0001018164-26-000053","document":"wlfc-20260331.htm","filed":"2026-05-05","form":"10-Q","items":"","report_date":"2026-03-31"},{"accession":"0001018164-26-000050","document":"wlfc-20260505.htm","filed":"2026-05-05","form":"8-K","items":"2.02,8.01,9.01","report_date":"2026-05-05"},{"accession":"0001193125-26-177136","document":"ck0001018164-20260422.htm","filed":"2026-04-24","form":"DEF 14A","items":"","report_date":"2026-05-26"},{"accession":"0001018164-26-000047","document":"wlfc-20260422.htm","filed":"2026-04-22","form":"8-K","items":"7.01,9.01","report_date":"2026-04-22"},{"accession":"0001018164-26-000043","document":"wlfc-20260326.htm","filed":"2026-03-31","form":"8-K","items":"1.02,9.01","report_date":"2026-03-26"},{"accession":"0001018164-26-000041","document":"wlfc-20251231.htm","filed":"2026-03-30","form":"10-K/A","items":"","report_date":"2025-12-31"},{"accession":"0001018164-26-000039","document":"wlfc-20260327.htm","filed":"2026-03-30","form":"8-K","items":"1.01,2.03,7.01,9.01","report_date":"2026-03-27"},{"accession":"0001018164-26-000036","document":"wlfc-20251231x10k.htm","filed":"2026-03-10","form":"10-K","items":"","report_date":"2025-12-31"},{"accession":"0001018164-26-000030","document":"wlfc-20260310.htm","filed":"2026-03-10","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-03-10"},{"accession":"0001018164-26-000018","document":"wlfc-20260219.htm","filed":"2026-02-24","form":"8-K","items":"1.01,2.03","report_date":"2026-02-19"},{"accession":"0001018164-26-000015","document":"wlfc-20260210.htm","filed":"2026-02-10","form":"8-K","items":"7.01,9.01","report_date":"2026-02-10"},{"accession":"0001018164-26-000012","document":"wlfc-20260209.htm","filed":"2026-02-09","form":"8-K","items":"8.01,9.01","report_date":"2026-02-09"},{"accession":"0001018164-26-000009","document":"wlfc-20260116.htm","filed":"2026-01-20","form":"8-K","items":"8.01,9.01","report_date":"2026-01-16"},{"accession":"0001018164-26-000007","document":"wlfc-20260109.htm","filed":"2026-01-09","form":"8-K","items":"8.01","report_date":"2026-01-09"},{"accession":"0001018164-26-000003","document":"wlfc-20260105.htm","filed":"2026-01-05","form":"8-K","items":"7.01,9.01","report_date":"2026-01-05"},{"accession":"0001018164-25-000159","document":"wlfc-20251218.htm","filed":"2025-12-23","form":"8-K","items":"7.01,9.01","report_date":"2025-12-18"},{"accession":"0001018164-25-000156","document":"wlfc-20251223.htm","filed":"2025-12-23","form":"8-K","items":"1.01,2.03,8.01,9.01","report_date":"2025-12-23"}],"former_names":[],"gleif_parents":[],"headquarters":[],"insiders":[{"accession":"0001676532-26-000012","acquired_disposed":"D","code":"S","date":"2026-09-15","derivative":false,"filed":"2026-09-15","following_shares":"214324.0","form":"4","owners":["Flaherty Scott B."],"plan_10b5_1":false,"price":"53.56","security":"Common Stock","shares":"8326.0"},{"accession":"0001676532-26-000012","acquired_disposed":"D","code":"S","date":"2026-09-14","derivative":false,"filed":"2026-09-15","following_shares":"222650.0","form":"4","owners":["Flaherty Scott B."],"plan_10b5_1":false,"price":"54.57","security":"Common Stock","shares":"18695.0"},{"accession":"0001676532-26-000012","acquired_disposed":"D","code":"S","date":"2026-09-11","derivative":false,"filed":"2026-09-15","following_shares":"241345.0","form":"4","owners":["Flaherty Scott B."],"plan_10b5_1":false,"price":"56.18","security":"Common Stock","shares":"2979.0"},{"accession":"0000905148-26-004074","acquired_disposed":"D","code":"S","date":"2026-09-01","derivative":false,"filed":"2026-09-03","following_shares":"420888.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"53.9","security":"Common Stock","shares":"15000.0"},{"accession":"0000905148-26-004063","acquired_disposed":"D","code":"S","date":"2026-08-31","derivative":false,"filed":"2026-09-02","following_shares":"40280.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"52.95","security":"Common Stock","shares":"400.0"},{"accession":"0000905148-26-003969","acquired_disposed":"D","code":"S","date":"2026-08-26","derivative":false,"filed":"2026-08-27","following_shares":"2492143.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"55.11","security":"Common Stock","shares":"15600.0"},{"accession":"0000905148-26-003969","acquired_disposed":"D","code":"S","date":"2026-08-25","derivative":false,"filed":"2026-08-27","following_shares":"2507743.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"56.05","security":"Common Stock","shares":"113.0"},{"accession":"0000905148-26-003969","acquired_disposed":"D","code":"S","date":"2026-08-25","derivative":false,"filed":"2026-08-27","following_shares":"2507856.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"54.5","security":"Common Stock","shares":"11287.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-24","derivative":false,"filed":"2026-08-24","following_shares":"2519143.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"55.23","security":"Common Stock","shares":"13684.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-24","derivative":false,"filed":"2026-08-24","following_shares":"2532827.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"54.59","security":"Common Stock","shares":"3016.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-21","derivative":false,"filed":"2026-08-24","following_shares":"2536943.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"54.44","security":"Common Stock","shares":"12400.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-21","derivative":false,"filed":"2026-08-24","following_shares":"2535843.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"54.79","security":"Common Stock","shares":"1100.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-20","derivative":false,"filed":"2026-08-24","following_shares":"2549343.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"54.66","security":"Common Stock","shares":"116.0"},{"accession":"0000905148-26-003886","acquired_disposed":"D","code":"S","date":"2026-08-20","derivative":false,"filed":"2026-08-24","following_shares":"2549459.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"53.98","security":"Common Stock","shares":"16184.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-19","derivative":false,"filed":"2026-08-19","following_shares":"2573586.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"55.11","security":"Common Stock","shares":"11357.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-19","derivative":false,"filed":"2026-08-19","following_shares":"2570453.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"56.48","security":"Common Stock","shares":"3133.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-19","derivative":false,"filed":"2026-08-19","following_shares":"2565643.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"57.27","security":"Common Stock","shares":"4810.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-18","derivative":false,"filed":"2026-08-19","following_shares":"2584943.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"58.19","security":"Common Stock","shares":"8535.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-18","derivative":false,"filed":"2026-08-19","following_shares":"2593478.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"57.46","security":"Common Stock","shares":"12480.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-18","derivative":false,"filed":"2026-08-19","following_shares":"2605958.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"56.61","security":"Common Stock","shares":"6485.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-17","derivative":false,"filed":"2026-08-19","following_shares":"2612443.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"58.85","security":"Common Stock","shares":"1778.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-17","derivative":false,"filed":"2026-08-19","following_shares":"2614221.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"58.38","security":"Common Stock","shares":"13590.0"},{"accession":"0000905148-26-003820","acquired_disposed":"D","code":"S","date":"2026-08-17","derivative":false,"filed":"2026-08-19","following_shares":"2627811.0","form":"4","owners":["WILLIS CHARLES F IV"],"plan_10b5_1":false,"price":"57.45","security":"Common Stock","shares":"16032.0"},{"accession":"0002070403-26-000013","acquired_disposed":"D","code":"S","date":"2026-08-14","derivative":false,"filed":"2026-08-17","following_shares":"39458.0","form":"4","owners":["Dameron Clifton"],"plan_10b5_1":false,"price":"56.83","security":"Common Stock","shares":"3535.0"},{"accession":"0000905148-26-003482","acquired_disposed":"D","code":"S","date":"2026-08-03","derivative":false,"filed":"2026-08-05","following_shares":"435888.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"73.68","security":"Common Stock","shares":"9363.0"},{"accession":"0000905148-26-003482","acquired_disposed":"D","code":"S","date":"2026-08-03","derivative":false,"filed":"2026-08-05","following_shares":"445251.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"72.77","security":"Common Stock","shares":"5637.0"},{"accession":"0001676532-26-000010","acquired_disposed":"A","code":"P","date":"2026-07-31","derivative":false,"filed":"2026-08-03","following_shares":"244324.0","form":"4","owners":["Flaherty Scott B."],"plan_10b5_1":false,"price":"29.07","security":"Common Stock","shares":"148.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"151880.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"225.09","security":"Common Stock","shares":"200.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"151632.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"227.21","security":"Common Stock","shares":"248.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"150532.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"227.99","security":"Common Stock","shares":"1100.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"152080.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"223.91","security":"Common Stock","shares":"500.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"150296.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"229.53","security":"Common Stock","shares":"236.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"154980.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"220.62","security":"Common Stock","shares":"500.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"153280.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"221.81","security":"Common Stock","shares":"1700.0"},{"accession":"0000905148-26-003170","acquired_disposed":"D","code":"S","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"152580.0","form":"4","owners":["Willis Austin Chandler"],"plan_10b5_1":false,"price":"222.71","security":"Common Stock","shares":"700.0"}],"legal_name":null,"lei":null,"lei_status":null,"lei_updated_at":null,"names":[],"parent_exceptions":[],"parents":[],"wikidata_id":null},"research_built_at":"2026-10-21T06:11:10.683776+00:00","reviewed_events":[],"reviewed_events_coverage":"selective; not a complete event history; accounting series not reconciled","sources":[{"coverage":"8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer","id":"sec","license":"SEC public-information reuse","license_url":"https://www.sec.gov/about/privacy-information","name":"SEC submissions","retrieved_at":"2026-10-20T06:11:47.043759+00:00","status":"ok","url":"https://www.sec.gov/search-filings/edgar-application-programming-interfaces"},{"coverage":"1663 unambiguous CIK-linked entities; coverage is incomplete","id":"wikidata","license":"CC0-1.0","license_url":"https://www.wikidata.org/wiki/Wikidata:Licensing","name":"Wikidata structured data","retrieved_at":"2026-10-15T06:12:13.268459+00:00","status":"ok","url":"https://www.wikidata.org/"},{"coverage":"1199 checked identities; 0 unavailable records","id":"gleif","license":"CC0-1.0","license_url":"https://www.gleif.org/en/meta/lei-data-terms-of-use","name":"GLEIF legal entity reference data","retrieved_at":"2026-10-15T06:13:53.192764+00:00","status":"ok","url":"https://www.gleif.org/en/lei-data/gleif-api"},{"coverage":"4 selected series; gaps remain missing","id":"fed","license":"Public domain (selected government series)","license_url":"https://www.federalreserve.gov/disclaimer.htm","name":"Federal Reserve Board H.15","retrieved_at":"2026-10-20T06:12:10.744440+00:00","status":"ok","url":"https://www.federalreserve.gov/releases/h15/"},{"coverage":"9 selected series; gaps remain missing","id":"bls","license":"Public domain","license_url":"https://www.bls.gov/opub/copyright-information.htm","name":"Bureau of Labor Statistics","retrieved_at":"2026-10-20T06:12:12.024240+00:00","status":"ok","url":"https://www.bls.gov/developers/"},{"coverage":"2026 Q3: filings in this completed quarter; not a live transaction feed","id":"insiders","license":"SEC public-information reuse","license_url":"https://www.sec.gov/about/privacy-information","name":"SEC insider transactions","retrieved_at":"2026-10-15T06:12:09.068487+00:00","status":"ok","url":"https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets"}]}