Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 59,021,000	$ 44,138,000	$ 49,456,000
Other comprehensive income (loss):
Unrealized holding gains (losses) on securities available for sale	(11,664,000)	2,268,000	15,106,000
Total other comprehensive income (loss)	(11,664,000)	2,268,000	15,106,000
Tax effect of unrealized holding gains (losses) on securities available for sale	2,449,000	(477,000)	(3,172,000)
Total tax effect of other comprehensive income (loss)	2,449,000	(477,000)	(3,172,000)
Other comprehensive income (loss), net of tax effect	(9,215,000)	1,791,000	11,934,000
Comprehensive income	$ 49,806,000	$ 45,929,000	$ 61,390,000