{"cik":1166928,"company":{"entity_status":null,"filings":[{"accession":"0001166928-26-000035","document":"wtba-20260723.htm","filed":"2026-07-23","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-07-23"},{"accession":"0001166928-26-000034","document":"wtba-20260630.htm","filed":"2026-07-23","form":"10-Q","items":"","report_date":"2026-06-30"},{"accession":"0002065530-26-000002","document":"xslF345X06/wk-form4_1777062431.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001923460-26-000002","document":"xslF345X06/wk-form4_1777062419.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001848382-26-000002","document":"xslF345X06/wk-form4_1777062364.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001575421-26-000002","document":"xslF345X06/wk-form4_1777062404.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001518982-26-000002","document":"xslF345X06/wk-form4_1777062385.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001332615-26-000002","document":"xslF345X06/wk-form4_1777062449.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001247350-26-000002","document":"xslF345X06/wk-form4_1777062468.xml","filed":"2026-04-24","form":"4","items":"","report_date":"2026-04-23"},{"accession":"0001166928-26-000029","document":"wtba-20260423.htm","filed":"2026-04-24","form":"8-K","items":"5.07,9.01","report_date":"2026-04-23"},{"accession":"0001166928-26-000024","document":"wtba-20260423.htm","filed":"2026-04-23","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-04-23"},{"accession":"0001166928-26-000023","document":"wtba-20260331.htm","filed":"2026-04-23","form":"10-Q","items":"","report_date":"2026-03-31"},{"accession":"0001855239-26-000004","document":"xslF345X06/wk-form4_1774556903.xml","filed":"2026-03-26","form":"4","items":"","report_date":"2026-03-25"},{"accession":"0001166928-26-000016","document":"wtba-20260217.htm","filed":"2026-03-03","form":"DEF 14A","items":"","report_date":"2025-12-31"},{"accession":"0001166928-26-000010","document":"wtba-20251231.htm","filed":"2026-02-26","form":"10-K","items":"","report_date":"2025-12-31"},{"accession":"0001166928-26-000002","document":"wtba-20260129.htm","filed":"2026-01-29","form":"8-K","items":"2.02,7.01,9.01","report_date":"2026-01-29"},{"accession":"0001166928-25-000082","document":"wtba-20251023.htm","filed":"2025-10-23","form":"8-K","items":"2.02,7.01,9.01","report_date":"2025-10-23"},{"accession":"0001166928-25-000081","document":"wtba-20250930.htm","filed":"2025-10-23","form":"10-Q","items":"","report_date":"2025-09-30"},{"accession":"0001166928-25-000078","document":"wtba-20251014.htm","filed":"2025-10-17","form":"8-K","items":"5.02","report_date":"2025-10-14"},{"accession":"0001166928-25-000068","document":"wtba-20250630.htm","filed":"2025-07-24","form":"10-Q","items":"","report_date":"2025-06-30"},{"accession":"0001166928-25-000067","document":"wtba-20250724.htm","filed":"2025-07-24","form":"8-K","items":"2.02,7.01,9.01","report_date":"2025-07-24"},{"accession":"0001166928-25-000061","document":"wtba-20250612.htm","filed":"2025-06-12","form":"8-K","items":"7.01,9.01","report_date":"2025-06-12"},{"accession":"0001166928-25-000036","document":"wtba-20250424.htm","filed":"2025-04-25","form":"8-K","items":"5.07,9.01","report_date":"2025-04-24"},{"accession":"0001166928-25-000034","document":"wtba-20250331.htm","filed":"2025-04-24","form":"10-Q","items":"","report_date":"2025-03-31"},{"accession":"0001166928-25-000033","document":"wtba-20250424.htm","filed":"2025-04-24","form":"8-K","items":"2.02,7.01,9.01","report_date":"2025-04-24"},{"accession":"0001166928-25-000018","document":"wtba-20250228.htm","filed":"2025-03-04","form":"DEF 14A","items":"","report_date":"2024-12-31"},{"accession":"0001166928-25-000012","document":"wtba-20241231.htm","filed":"2025-02-20","form":"10-K","items":"","report_date":"2024-12-31"},{"accession":"0001166928-25-000002","document":"wtba-20250123.htm","filed":"2025-01-23","form":"8-K","items":"2.02,5.02,7.01,9.01","report_date":"2025-01-23"},{"accession":"0001166928-24-000107","document":"wtba-20240930.htm","filed":"2024-10-24","form":"10-Q","items":"","report_date":"2024-09-30"},{"accession":"0001166928-24-000106","document":"wtba-20241024.htm","filed":"2024-10-24","form":"8-K","items":"2.02,7.01,9.01","report_date":"2024-10-24"},{"accession":"0001166928-24-000094","document":"wtba-20240819.htm","filed":"2024-08-21","form":"8-K","items":"5.02","report_date":"2024-08-19"},{"accession":"0001166928-24-000089","document":"wtba-20240630.htm","filed":"2024-07-25","form":"10-Q","items":"","report_date":"2024-06-30"},{"accession":"0001166928-24-000088","document":"wtba-20240725.htm","filed":"2024-07-25","form":"8-K","items":"2.02,7.01,9.01","report_date":"2024-07-25"},{"accession":"0001166928-24-000055","document":"wtba-20240425.htm","filed":"2024-04-26","form":"8-K","items":"5.02,5.07,9.01","report_date":"2024-04-25"},{"accession":"0001166928-24-000052","document":"wtba-20240331.htm","filed":"2024-04-25","form":"10-Q","items":"","report_date":"2024-03-31"},{"accession":"0001166928-24-000051","document":"wtba-20240425.htm","filed":"2024-04-25","form":"8-K","items":"2.02,7.01,9.01","report_date":"2024-04-25"},{"accession":"0001166928-24-000029","document":"wtba-20240304.htm","filed":"2024-03-05","form":"DEF 14A","items":"","report_date":"2023-12-31"},{"accession":"0001166928-24-000024","document":"wtba-20231231.htm","filed":"2024-02-23","form":"10-K/A","items":"","report_date":"2023-12-31"},{"accession":"0001166928-24-000017","document":"wtba-20231231.htm","filed":"2024-02-22","form":"10-K","items":"","report_date":"2023-12-31"},{"accession":"0000315066-24-001546","document":"filing.txt","filed":"2024-02-09","form":"SC 13G/A","items":"","report_date":""}],"former_names":[],"gleif_parents":[],"headquarters":[],"insiders":[],"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"}]}