CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net loss	$ (9,638)	$ (897)	$ (1,667)
Other comprehensive income (loss)
Unrealized holding gains on available-for-sale securities	1,155	1,241	406
Tax effect	(465)	(505)	(164)
Reclassification of gains recognized in net loss	(278)	(563)	0
Tax effect	112	227	0
Net of tax amount	524	400	242
Cash flow hedging activities:
Unrealized holding gains (losses) on cash flow hedging activities	1,801	(460)	(3,717)
Tax effect	(727)	185	1,501
Reclassification of losses recognized in net loss	1,339	0	0
Tax effect	(540)	0	0
Net of tax amount	1,873	(275)	(2,216)
Total other comprehensive income (loss)	2,397	125	(1,974)
Comprehensive loss	$ (7,241)	$ (772)	$ (3,641)