CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 2,067	$ (2,179)	$ 3,647
Change in unrealized appreciation of retained interests in transferred assets:
Net unrealized appreciation (depreciation) arising during period	109	(5)	223
Realized gains included in net income (loss)	(100)	(111)	(105)
Change in net unrealized appreciation of retained interests in transferred assets	9	(116)	118
Comprehensive income (loss)	$ 2,076	$ (2,295)	$ 3,765