Other Comprehensive Income (Loss) (Classifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense	$ (3,154)			$ (2,809)			$ (8,180)	$ (8,568)
NET INCOME	14,593	$ 14,255	$ 12,472	13,064	$ 15,271	$ 15,067	41,320	43,402
Total Reclassifications	480			247			1,726	777
Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Reclassifications	480			247			1,726	777
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	607			313			2,190	984
Income Tax Expense	(127)			(66)			(464)	(207)
NET INCOME	480			247			1,726	777
Total Reclassifications	$ 480			$ 247			$ 1,726	$ 777