Consolidated Statements of Comprehensive (Loss) Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements of Comprehensive (Loss) Income (Unaudited) [Abstract]
Net Income	$ 5,565	$ 5,162	$ 11,816	$ 11,352
Other Comprehensive Income
(Decrease) Increase in Net Unrealized (Losses) Gains on Available-for-Sale Securities	(12,771)	3,538	(14,588)	4,921
Reclassification Adjustment for Realized Gains on Available-for-Sale Securities Included in Net Income	(154)	0	(889)	0
Deferred Tax Benefit (Expense)	5,434	(1,488)	6,507	(2,069)
Change in Net Unrealized (Losses) Gains on Available-for-Sale Securities, Net of Tax	(7,491)	2,050	(8,970)	2,852
Total Other Comprehensive (Loss) Income	(7,491)	2,050	(8,970)	2,852
Comprehensive (Loss) Income	$ (1,926)	$ 7,212	$ 2,846	$ 14,204