Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 3,647	$ 4,297	$ 6,761
Change in net unrealized appreciation of retained interests in transferred assets:
Net unrealized appreciation (depreciation) arising during period	223	240	(206)
Realized gains included in net income	(105)	(24)	(89)
Total change in net unrealized appreciation of retained interests in transferred assets	118	216	(295)
Comprehensive income	$ 3,765	$ 4,513	$ 6,466