Accumulated Other Comprehensive Income, Reclassification of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense (benefit)	$ 928	$ 961	$ 2,802	$ 2,875
Reclassification adjustment, net of taxes	0	(16)	175	(29)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustment, net of taxes	0	(16)	175	(29)
Unrealized Gains and Losses on Available-for-Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) from sales of debt securities, available-for-sale	0	(20)	221	(37)
Income tax expense (benefit)	0	(4)	46	(8)
Reclassification adjustment, net of taxes	$ 0	$ (16)	$ 175	$ (29)