Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Income [Abstract]
Net Income	$ 56,036	$ 45,527	$ 28,370
Other Comprehensive Loss
Net Unrealized Gain (Loss) on Available-for-Sale Securities	8,936	(4,343)	(1,011)
Deferred Tax Benefit Related to Unrealized (Gain) Losses	(2,642)	1,284	281
Reclassification Adjustment for Realized (Gain) Loss on Available-for-Sale Securities Included in Net Income	(1)	1,260	(131)
Tax (Benefit) Expense Related to Reclassification Adjustment	0	(372)	55
Change in Net Unrealized Gain (Loss) on Available-for-Sale Securities, Net of Tax	6,293	(2,171)	(806)
Total Other Comprehensive Income (Loss)	6,293	(2,171)	(806)
Comprehensive Income	$ 62,329	$ 43,356	$ 27,564