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PARENT COMPANY STATEMENTS - CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | $ 2,725 | $ 3,564 | $ 2,857
Interest expense | $ (3,315) | $ (3,554) | $ (3,964) | $ (4,298) | $ (5,141) | $ (6,066) | $ (7,303) | $ (11,585) | (15,131) | (30,095) | (60,163)
Income tax benefit | (5,507) | (5,469) | (5,705) | (5,030) | (6,071) | (5,377) | (4,448) | (3,643) | (21,711) | (19,539) | (20,338)
NET INCOME | $ 24,283 | $ 24,119 | $ 24,348 | $ 22,983 | $ 24,592 | $ 22,776 | $ 19,670 | $ 17,299 | 95,733 | 84,337 | 87,047
COMPREHENSIVE INCOME |  |  |  |  |  |  |  |  | 84,082 | 100,022 | 105,297
Reportable Legal Entities | Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | 3 | 0 | 155
Interest expense |  |  |  |  |  |  |  |  | (7) | 0 | (1,720)
Miscellaneous expense |  |  |  |  |  |  |  |  | (8,133) | (3,935) | (5,321)
INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES |  |  |  |  |  |  |  |  | 40,253 | 29,444 | 52,258
Income tax benefit |  |  |  |  |  |  |  |  | 2,360 | 1,065 | 2,256
INCOME BEFORE EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES |  |  |  |  |  |  |  |  | 42,613 | 30,509 | 54,514
Equity in undistributed income of subsidiaries |  |  |  |  |  |  |  |  | 53,120 | 53,828 | 32,533
NET INCOME |  |  |  |  |  |  |  |  | 95,733 | 84,337 | 87,047
COMPREHENSIVE INCOME |  |  |  |  |  |  |  |  | 84,082 | 100,022 | 105,297
Reportable Legal Entities | Parent Company | Lake City Bank |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividends from Lake City Bank, Lakeland Statutory Trust II |  |  |  |  |  |  |  |  | 47,355 | 32,079 | 57,842
Reportable Legal Entities | Parent Company | Non-bank Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividends from Lake City Bank, Lakeland Statutory Trust II |  |  |  |  |  |  |  |  | $ 1,035 | $ 1,300 | $ 1,302

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