Condensed Consolidated Statements of Comprehensive 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
Net Income	$ 5,816	$ 12,321	$ 16,369	$ 23,372
Other comprehensive (loss) income, before tax expense:
Unrealized holding (losses) gains on securities arising during the period	(28,071)	998	(32,346)	1,097
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	2,841	(1,323)	4,705	175
Less: reclassification adjustment for gains on securities included in net income	(4)	0	(8)	0
Total other comprehensive (loss) income, before tax expense	(25,234)	(325)	(27,649)	1,272
Income tax benefit (expense) related to items of other comprehensive income	8,824	119	9,668	(439)
Total other comprehensive (loss) income	(16,410)	(206)	(17,981)	833
Comprehensive (Loss) Income	$ (10,594)	$ 12,115	$ (1,612)	$ 24,205