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Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Operations (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Condensed Financial Statements Captions [Line Items] |  |  |
Interest expense | $ (11,049) | $ (6,317) | $ (10,138)
Income tax benefit | (7,608) | (7,835) | (4,940)
Net income | 39,427 | 40,546 | 32,192
Comprehensive income (loss) | (27,438) | 34,747 | 39,937
CBI[Member] |  |  |
Condensed Financial Statements Captions [Line Items] |  |  |
Dividends from bank subsidiaries | 26,300 | 19,900 | 15,300
Dividends from non-bank subsidiaries | 1,150 | 1,000 | 440
Interest expense | (3,781) | (956) | (945)
Pension expense | 340 | (47) | (25)
Other expense, net | (2,384) | (1,004) | (1,241)
Income before equity in undistributed net earnings of subsidiaries | 21,625 | 18,893 | 13,529
Income tax benefit | 1,140 | 425 | 475
Equity in undistributed net earnings of subsidiaries | 16,662 | 21,228 | 18,188
Net income | 39,427 | 40,546 | 32,192
Comprehensive income (loss) | $ (27,438) | $ 34,747 | $ 39,937

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