CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Comprehensive Income (Loss) [Abstract]
Net income	$ 2,680		$ 1,084		$ 9,562		$ 3,522
Available-for-sale securities:
Gross unrealized holding gain (loss) arising in the period	(3,912)		6,562		(16,921)		13,037
Related income tax effect	1,369		(2,297)		5,922		(4,563)
Less: reclassification adjustment for net realized gains included in net income	(2,283)	[1]	0	[1]	(8,415)	[1]	(1,428)	[1]
Related income tax effect	799	[2]	0	[2]	2,945	[2]	500	[2]
Net effect on other comprehensive income (loss)	(4,027)		4,265		(16,469)		7,546
Derivative financial instrument:
Fair value adjustment to derivative financial instrument	0		188		141		534
Related income tax effect	0		(66)		(49)		(187)
Net effect on other comprehensive income (loss)	0		122		92		347
Total other comprehensive income (loss), net of tax	(4,027)		4,387		(16,377)		7,893
Total comprehensive income (loss)	$ (1,347)		$ 5,471		$ (6,815)		$ 11,415

[1] Realized gains on available-for-sale securities recognized in realized investment gains, net on the accompanying condensed consolidated statements of operations.

[2] Income tax effect on reclassification adjustment for net realized gains included in income tax expense (benefit) on the accompanying condensed consolidated statements of operations.