Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 166,670	$ 106,835	$ 93,557
Ending balance	211,729	166,670	106,835
Unrealized Gains (Losses) on Available-for-Sale Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	8,952	3,602	(1,095)
Other comprehensive (loss) income before reclassifications, net of tax	(8,737)	5,441	4,708
Amounts reclassified from accumulated other comprehensive income, net of tax	(36)	(91)	(11)
Net current-period other comprehensive income (loss)	(8,773)	5,350	4,697
Ending balance	$ 179	$ 8,952	$ 3,602