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)	$ (2,179)	$ 3,647	$ 4,297
Change in unrealized appreciation of retained interests in transferred assets:
Net unrealized appreciation (depreciation) arising during period	(5)	223	240
Realized gains included in net income (loss)	(111)	(105)	(24)
Change in net unrealized appreciation of retained interests in transferred assets	(116)	118	216
Comprehensive income (loss)	$ (2,295)	$ 3,765	$ 4,513