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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Spirit of Texas Bancshares, Inc. | Common Stock | Common Stock Spirit of Texas Bancshares, Inc. | Surplus | Surplus Spirit of Texas Bancshares, Inc. | Accumulated Other Comprehensive (Loss) Income | Undivided Profits
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2021 | $ 3,248,841 |  | $ 1,127 |  | $ 2,164,989 |  | $ (10,545) | $ 1,093,270
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income | (347,334) |  |  |  |  |  | (439,883) | 92,549
Stock issued for employee stock purchase plan | 1,151 |  | 1 |  | 1,150 |  |  |
Stock-based compensation plans, net |  | $ 4,259 |  | $ 2 |  | $ 4,257 |  |
Stock issued for Spirit acquisition | 464,918 |  | 183 |  | 464,735 |  |  |
Stock repurchases | (66,096) |  | (25) |  | (66,071) |  |  |
Dividends on common stock | (45,844) |  |  |  |  |  |  | (45,844)
Balance at Jun. 30, 2022 | 3,259,895 |  | 1,288 |  | 2,569,060 |  | (450,428) | 1,139,975
Balance at Mar. 31, 2022 | 2,961,607 |  | 1,125 |  | 2,150,453 |  | (326,961) | 1,136,990
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income | (96,013) |  |  |  |  |  | (123,467) | 27,454
Stock-based compensation plans, net | 3,893 |  | 0 |  | 3,893 |  |  |
Stock issued for Spirit acquisition |  | $ 464,918 |  | $ 183 |  | $ 464,735 |  |
Stock repurchases | (50,041) |  | (20) |  | (50,021) |  |  |
Dividends on common stock | (24,469) |  |  |  |  |  |  | (24,469)
Balance at Jun. 30, 2022 | 3,259,895 |  | 1,288 |  | 2,569,060 |  | (450,428) | 1,139,975
Balance at Dec. 31, 2022 | 3,269,362 |  | 1,270 |  | 2,530,066 |  | (517,560) | 1,255,586
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income | 151,475 |  |  |  |  |  | 47,572 | 103,903
Stock issued for employee stock purchase plan | 833 |  | 0 |  | 833 |  |  |
Stock-based compensation plans, net | 5,513 |  | 3 |  | 5,510 |  |  |
Stock repurchases | (20,022) |  | (11) |  | (20,011) |  |  |
Dividends on common stock | (50,835) |  |  |  |  |  |  | (50,835)
Balance at Jun. 30, 2023 | 3,356,326 |  | 1,262 |  | 2,516,398 |  | (469,988) | 1,308,654
Balance at Mar. 31, 2023 | 3,339,901 |  | 1,273 |  | 2,533,589 |  | (470,681) | 1,275,720
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income | 59,007 |  |  |  |  |  | 693 | 58,314
Stock-based compensation plans, net | 2,820 |  | 0 |  | 2,820 |  |  |
Stock repurchases | (20,022) |  | (11) |  | (20,011) |  |  |
Dividends on common stock | (25,380) |  |  |  |  |  |  | (25,380)
Balance at Jun. 30, 2023 | $ 3,356,326 |  | $ 1,262 |  | $ 2,516,398 |  | $ (469,988) | $ 1,308,654

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