{"cik":803164,"company":{"entity_status":null,"filings":[{"accession":"0000905729-26-000165","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000164","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000163","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000162","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000161","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000160","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000159","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0000905729-26-000158","document":"xslF345X06/ownership.xml","filed":"2026-10-02","form":"4","items":"","report_date":"2026-10-01"},{"accession":"0001193125-26-342347","document":"cofs-20260630.htm","filed":"2026-08-10","form":"10-Q","items":"","report_date":"2026-06-30"},{"accession":"0001193125-26-315065","document":"cofs-20260724.htm","filed":"2026-07-24","form":"8-K","items":"2.02,9.01","report_date":"2026-07-24"},{"accession":"0000905729-26-000112","document":"choice8ka_052726.htm","filed":"2026-05-27","form":"8-K/A","items":"5.07","report_date":"2026-05-20"},{"accession":"0000905729-26-000109","document":"choice8k_052226.htm","filed":"2026-05-22","form":"8-K","items":"5.07","report_date":"2026-05-20"},{"accession":"0000905729-26-000107","document":"choice8k_052026.htm","filed":"2026-05-20","form":"8-K","items":"7.01,9.01","report_date":"2026-05-20"},{"accession":"0001193125-26-216698","document":"cofs-20260331.htm","filed":"2026-05-11","form":"10-Q","items":"","report_date":"2026-03-31"},{"accession":"0000905729-26-000093","document":"choice8k_050526.htm","filed":"2026-05-05","form":"8-K","items":"7.01,9.01","report_date":"2026-05-05"},{"accession":"0001193125-26-175011","document":"cofs-20260424.htm","filed":"2026-04-24","form":"8-K","items":"2.02,9.01","report_date":"2026-04-24"},{"accession":"0001140361-26-014320","document":"ny20060700x1_def14a.htm","filed":"2026-04-13","form":"DEF 14A","items":"","report_date":"2026-05-20"},{"accession":"0001193125-26-105046","document":"cofs-20251231.htm","filed":"2026-03-13","form":"10-K","items":"","report_date":"2025-12-31"},{"accession":"0000905729-26-000032","document":"choice8k_020426.htm","filed":"2026-02-04","form":"8-K","items":"7.01,9.01","report_date":"2026-02-04"},{"accession":"0001193125-26-030504","document":"cofs-20260130.htm","filed":"2026-01-30","form":"8-K","items":"2.02,9.01","report_date":"2026-01-30"},{"accession":"0001193125-25-273356","document":"cofs-20250930.htm","filed":"2025-11-10","form":"10-Q","items":"","report_date":"2025-09-30"},{"accession":"0000905729-25-000180","document":"choice8k_110625.htm","filed":"2025-11-06","form":"8-K","items":"7.01,9.01","report_date":"2025-11-06"},{"accession":"0001193125-25-249366","document":"cofs-20251024.htm","filed":"2025-10-24","form":"8-K","items":"1.02,9.01","report_date":"2025-10-24"},{"accession":"0000950170-25-105803","document":"cofs-20250630.htm","filed":"2025-08-08","form":"10-Q","items":"","report_date":"2025-06-30"},{"accession":"0000950170-25-098569","document":"cofs-20250725.htm","filed":"2025-07-25","form":"8-K","items":"2.02,9.01","report_date":"2025-07-25"},{"accession":"0000905729-25-000100","document":"choice8k_062725.htm","filed":"2025-06-27","form":"8-K","items":"5.02","report_date":"2025-06-25"},{"accession":"0000803164-25-000014","document":"choice8k_052725.htm","filed":"2025-05-27","form":"8-K","items":"5.07","report_date":"2025-05-21"},{"accession":"0000803164-25-000012","document":"choice8kpr_052125.htm","filed":"2025-05-21","form":"8-K","items":"5.02,9.01","report_date":"2025-05-21"},{"accession":"0000803164-25-000011","document":"choice8k_052125.htm","filed":"2025-05-21","form":"8-K","items":"7.01,9.01","report_date":"2025-05-21"},{"accession":"0000950170-25-069133","document":"cofs-20250331.htm","filed":"2025-05-12","form":"10-Q","items":"","report_date":"2025-03-31"},{"accession":"0000950170-25-060598","document":"cofs-20250430.htm","filed":"2025-04-30","form":"8-K","items":"2.02,9.01","report_date":"2025-04-30"},{"accession":"0001140361-25-012677","document":"ny20041292x1_def14a.htm","filed":"2025-04-08","form":"DEF 14A","items":"","report_date":"2025-05-21"},{"accession":"0000905729-25-000052","document":"choice8k_031725.htm","filed":"2025-03-17","form":"8-K","items":"8.01","report_date":"2025-03-17"},{"accession":"0000950170-25-036839","document":"cofs-20241231.htm","filed":"2025-03-11","form":"10-K","items":"","report_date":"2024-12-31"},{"accession":"0000950170-25-030833","document":"cofs-20250301.htm","filed":"2025-03-03","form":"8-K","items":"2.01,5.02,8.01,9.01","report_date":"2025-03-01"},{"accession":"0000905729-25-000040","document":"choice8k_021825.htm","filed":"2025-02-18","form":"8-K","items":"7.01,9.01","report_date":"2025-02-18"},{"accession":"0000803164-25-000003","document":"choice8k_021325.htm","filed":"2025-02-13","form":"8-K","items":"8.01","report_date":"2025-02-12"},{"accession":"0000950170-25-007734","document":"cofs-20250122.htm","filed":"2025-01-22","form":"8-K","items":"2.02,9.01","report_date":"2025-01-22"},{"accession":"0000905729-24-000172","document":"choice8k_121324.htm","filed":"2024-12-13","form":"8-K","items":"5.07,7.01,9.01","report_date":"2024-12-12"},{"accession":"0002012383-24-004052","document":"us1703861062_110824.txt","filed":"2024-11-08","form":"SC 13G","items":"","report_date":""}],"former_names":[{"from":"1995-05-12T04:00:00.000Z","name":"1ST COMMUNITY BANCORP INC","to":"1998-04-09T04:00:00.000Z"}],"gleif_parents":[],"headquarters":[],"insiders":[{"accession":"0000905729-26-000128","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"7477.0","form":"4","owners":["Wendling Michelle M"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"202.0"},{"accession":"0000905729-26-000127","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"92187.0","form":"4","owners":["PETTY BRIAN P"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000126","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"7322.45","form":"4","owners":["Page Roxanne M"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"202.0"},{"accession":"0000905729-26-000125","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"14219.0","form":"4","owners":["McGinnis Bradley F."],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000124","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"37446.0","form":"4","owners":["McConnell Gregory A"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"202.0"},{"accession":"0000905729-26-000123","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"17527.91","form":"4","owners":["Krause Steven Theodore"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000122","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"100015.0","form":"4","owners":["Hicks Randy D"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000121","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"250503.0","form":"4","owners":["Essex Bruce John Jr"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"202.0"},{"accession":"0000905729-26-000120","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"11059.91","form":"4","owners":["Coulter Curt E"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"202.0"},{"accession":"0000905729-26-000119","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"181477.0","form":"4","owners":["Burrough Eric E"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000118","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"26070.24","form":"4","owners":["Burns Harold J"],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"},{"accession":"0000905729-26-000117","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"13443.91","form":"4","owners":["Brophy Keith D."],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"345.0"},{"accession":"0000905729-26-000116","acquired_disposed":"A","code":"A","date":"2026-07-01","derivative":false,"filed":"2026-07-06","following_shares":"46370.18","form":"4","owners":["Armock Greg L."],"plan_10b5_1":false,"price":"34.0","security":"Common Stock","shares":"489.0"}],"legal_name":null,"lei":null,"lei_status":null,"lei_updated_at":null,"names":[],"parent_exceptions":[],"parents":[],"wikidata_id":null},"research_built_at":"2026-10-23T06:11:20.354311+00:00","reviewed_events":[],"reviewed_events_coverage":"selective; not a complete event history; accounting series not reconciled","sources":[{"coverage":"8022 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":"2026-10-23T06:12:00.336203+00:00","status":"ok","url":"https://www.sec.gov/search-filings/edgar-application-programming-interfaces"},{"coverage":"1658 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":"2026-10-23T06:12:25.714432+00:00","status":"ok","url":"https://www.wikidata.org/"},{"coverage":"1197 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":"2026-10-23T06:14:03.968440+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":"2026-10-23T06:27:13.562713+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":"2026-10-23T06:27:14.878114+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":"2026-10-23T06:12:21.860189+00:00","status":"ok","url":"https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets"}]}