11. Fair Value measurements (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Contractual Balance [Member]
Fair values of the Fireside receivables and the related secured debt to their contractual balances
Fireside receivables portfolio	$ 31,084	$ 60,804
Debt secured by Fireside receivables portfolio	8,851	41,365
Fair Value [Member]
Fair values of the Fireside receivables and the related secured debt to their contractual balances
Fireside receivables portfolio	30,319	59,668
Debt secured by Fireside receivables portfolio	$ 25,622	$ 57,107