Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Amounts Reclassified from AOCI [Abstract]
Securities gains	$ 280	$ 937	$ 112	$ 1,186
Tax expense	6,356	3,829	12,746	4,087
Net income	23,931	19,652	47,549	26,231
Unrealized Gains on AFS Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member]
Amounts Reclassified from AOCI [Abstract]
Securities gains	0	564	60	1,045
Tax expense	0	147	16	272
Net income	$ 0	$ 417	$ 44	$ 773