Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Amounts Reclassified from AOCI [Abstract]
Securities gains	$ (62)	$ 142	$ 50	$ 1,328
Tax expense	5,095	3,238	17,841	7,325
Net income	21,142	17,447	68,691	43,678
Unrealized Gains on AFS Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member]
Amounts Reclassified from AOCI [Abstract]
Securities gains	0	24	60	1,069
Tax expense	0	6	16	278
Net income	$ 0	$ 18	$ 44	$ 791