Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Statements of Comprehensive Income (Unaudited) [Abstract]
Net Income	$ 7,040	$ 6,432	$ 20,192	$ 18,818
Other Comprehensive Income (Loss)
Change in Net Unrealized Gain (Loss) on Available-for-Sale Securities	2,460	(1,752)	910	5,929
Deferred Tax Benefit (Expense) Related to Unrealized Gains	(1,033)	736	(382)	(2,493)
Reclassification Adjustment for Realized Gains on Available-for-Sale Securities Included in Net Income	(266)	(4)	(272)	(38)
Deferred Tax Benefit Related to Reclassification Adjustment	111	2	114	16
Change in Net Unrealized Gain (Loss) on Available-for-Sale Securities, Net of Tax	1,272	(1,018)	370	3,414
Total Other Comprehensive (Loss) Income	1,272	(1,018)	370	3,414
Comprehensive Income	$ 8,312	$ 5,414	$ 20,562	$ 22,232