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Parent Company Financial Statements, Condensed Statements of Income and Comprehensive Income (loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Expenses [Abstract] |  |  |
Interest expense | $ 28,640 | $ 15,090 | $ 25,450
Other expenses | 15,319 | 11,968 | 12,031
Income tax benefit | 19,228 | 22,704 | 10,761
Net income | 81,814 | 87,939 | 59,504
Unrealized holding gains (losses) on debt securities available-for-sale [Abstract] |  |  |
Unrealized holding gains (losses) arising during the period | (168,060) | (24,827) | 13,839
Less: Reclassification adjustments for realized gains (losses) included in net income | (81) | 60 | 1,251
Other comprehensive income (loss), net of tax | (124,304) | (18,416) | 9,315
Comprehensive income (loss) | (42,490) | 69,523 | 68,819
Parent Company [Member] |  |  |
Income [Abstract] |  |  |
Dividends from subsidiaries | 31,544 | 33,319 | 29,593
Other income | 710 | 482 | 476
Total income | 32,254 | 33,801 | 30,069
Expenses [Abstract] |  |  |
Interest expense | 2,060 | 1,090 | 1,519
Depreciation expense | 75 | 70 | 112
Other expenses | 4,833 | 5,878 | 3,302
Total expenses | 6,968 | 7,038 | 4,933
Income before income taxes and equity in undistributed income of subsidiaries | 25,286 | 26,763 | 25,136
Income tax benefit | (1,808) | (1,700) | (576)
Income before equity in undistributed income of subsidiaries | 27,094 | 28,463 | 25,712
Equity in undistributed income of subsidiaries | 54,720 | 59,476 | 33,792
Net income | 81,814 | 87,939 | 59,504
Unrealized holding gains (losses) on debt securities available-for-sale [Abstract] |  |  |
Unrealized holding gains (losses) arising during the period | (168,060) | (24,827) | 13,839
Less: Reclassification adjustments for realized gains (losses) included in net income | (81) | 60 | 1,251
Tax expense (benefit) | (43,675) | (6,471) | 3,273
Other comprehensive income (loss), net of tax | (124,304) | (18,416) | 9,315
Comprehensive income (loss) | $ (42,490) | $ 69,523 | $ 68,819

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