Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements of Comprehensive Income (Unaudited) [Abstract]
Net Income	$ 6,282	$ 6,251
Other Comprehensive Income
Increase (Decrease) in Net Unrealized Gain (Loss) on Available-for-Sale Securities	3,048	(1,817)
Reclassification Adjustment for Realized Gains on Available-for-Sale Securities Included in Net Income	(3)	(735)
Deferred Tax (Expense) Benefit	(1,280)	1,073
Change in Net Unrealized Gain (Loss) on Available-for-Sale Securities, Net of Tax	1,765	(1,479)
Total Other Comprehensive Income (Loss)	1,765	(1,479)
Comprehensive Income	$ 8,047	$ 4,772