CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss)	$ 4,313	$ (430)	$ (7,996)
Change in net unrealized gains (losses) on investments available for sale	5,114	572	(2,415)
Comprehensive income (loss) before tax	9,427	142	(10,411)
Income tax (expense) benefit related to items of other comprehensive income (loss)	(1,924)	(215)	909
Comprehensive income (loss)	$ 7,503	$ (73)	$ (9,502)