Other Comprehensive Income (Loss) (Classifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense	$ (4,913)			$ (3,154)			$ (15,489)	$ (8,180)
NET INCOME	21,486	$ 23,822	$ 19,557	14,593	$ 14,255	$ 12,472	64,865	41,320
Total Reclassifications	172			480			1,179	1,726
Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Reclassifications	172			480			1,179	1,726
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Gains on Securities	218			607			1,493	2,190
Income Tax Expense	(46)			(127)			(314)	(464)
NET INCOME	172			480			1,179	1,726
Total Reclassifications	$ 172			$ 480			$ 1,179	$ 1,726