Parent Company only Condensed Financial Information - Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed statements of income
Interest expense	$ (7,131)	$ (8,581)	$ (10,847)
Income tax benefit	(18,170)	(13,769)	(15,851)
Net income	47,700	35,299	40,461
Parent Company
Condensed statements of income
Dividend from subsidiary bank	32,000	32,000	22,500
Other Income			121
Interest expense	(2,314)	(2,321)	(2,314)
Other expenses	(3,929)	(3,263)	(3,084)
Income before income taxes and equity in net income of subsidiary bank	25,757	26,416	17,223
Equity in undistributed net income of subsidiary bank	20,127	7,255	21,757
Income tax benefit	1,816	1,628	1,481
Net income	$ 47,700	$ 35,299	$ 40,461