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Parent Company Only Condensed Financial Statements - Condensed Statements of Operations (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating Income [Abstract]      
Dividends from Bank $ 1,275 $ 895 $ 1,055
Dividends from Other Subsidiaries 2,000 1,400 1,500
Expenses:      
Interest expense 10,960 9,885 7,507
Income tax benefit (35,578) (17,563) (23,297)
Income tax expense 133,055 74,384 92,739
Total comprehensive income 114,712 93,755 119,770
Parent [Member]      
Operating Income [Abstract]      
Dividends from Bank 95,000 37,000 60,000
Other 3,600 483 663
Total income 100,600 38,883 62,163
Expenses:      
Interest expense 11,406 10,590 8,689
Other expenses 11,037 6,946 6,936
Total expenses 22,443 17,536 15,625
Income before taxes and equity in undistributed earnings of subsidiaries 78,157 21,347 46,538
Income tax benefit 3,710 3,448 3,478
Income tax expense 81,867 24,795 50,016
Equity in undistributed earnings of subsidiaries 51,188 49,589 42,723
Total comprehensive income $ 133,055 $ 74,384 $ 92,739