Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net Income	$ 24,061	$ 23,349	$ 22,209
Other Comprehensive Income (Loss)
(Decrease) Increase in Net Unrealized (Loss) Gain on Available-for-Sale Securities	(16,564)	4,182	5,364
Reclassification Adjustment for Realized Loss (Gain) on Available-for-Sale Securities Included in Net Income	229	(158)	(95)
Deferred Tax Benefit (Expense)	6,868	(1,692)	(2,215)
Change in Net Unrealized (Loss) Gain on Available-for-Sale Securities, Net of Tax	(9,467)	2,332	3,054
Total Other Comprehensive (Loss) Income	(9,467)	2,332	3,054
Comprehensive Income	$ 14,594	$ 25,681	$ 25,263