CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Comprehensive Income (Loss) [Abstract]
Net income	$ 922		$ 1,657
Available-for-sale securities:
Gross unrealized holding loss arising in the period	(2,246)		(1,446)
Related income tax effect	786		506
Less: reclassification adjustment for net realized gains included in net income	(678)	[1]	(958)	[1]
Related income tax effect	237	[2]	336	[2]
Net effect on other comprehensive loss	(1,901)		(1,562)
Derivative financial instrument:
Fair value adjustment to derivative financial instrument	141		153
Related income tax effect	(49)		(54)
Net effect on other comprehensive income	92		99
Net current-period other comprehensive income (loss)	(1,809)		(1,463)
Total comprehensive income (loss)	$ (887)		$ 194

[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 on the accompanying condensed consolidated statements of operations.