Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income (Loss) (Unaudited) [Abstract]
Net Income	$ 6,104	$ 5,565	$ 12,386	$ 11,816
Other Comprehensive Income (Loss)
Increase (Decrease) in Net Unrealized Gains (Losses) on Available-for-Sale Securities	4,633	(12,771)	7,681	(14,588)
Reclassification Adjustment for Realized Gains on Available-for-Sale Securities Included in Net Income	(31)	(154)	(34)	(889)
Deferred Tax (Expense) Benefit	(1,935)	5,434	(3,215)	6,507
Change in Net Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax	2,667	(7,491)	4,432	(8,970)
Total Other Comprehensive Income (Loss)	2,667	(7,491)	4,432	(8,970)
Comprehensive Income (Loss)	$ 8,771	$ (1,926)	$ 16,818	$ 2,846