Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended			12 Months Ended
	Mar. 31, 2013 item		Mar. 31, 2012 item	Dec. 31, 2012		Dec. 31, 2011
Nature of Operations
Number of major business segments	2		2
Number of minimum co-investors forming investment entities	1
Merger transaction share price expected to receive				$ 10.00
Basis of Presentation
Net loss (earnings)	$ (1,972)		$ 9,473
Total assets	223,157	[1]		244,637	[1]
Stockholders' equity	134,181		146,958	137,267		137,403
Restatement adjustment
Basis of Presentation
Net loss (earnings)	0
Total assets	0
Stockholders' equity	$ 0

[1] Our consolidated assets at March 31, 2013 and December 31, 2012 include the following assets of certain variable interest entities ("VIEs") that can only be used to settle the liabilities of those VIEs: Cash and cash equivalents, $15.7 million and $22.3 million; Portfolio Assets, $39.4 million and $42.1 million; Loans receivable, $10.2 million and $12.7 million; Equity investments, $11.7 million and $21.6 million; Assets held for sale, $27.4 million and $24.1 million; various other assets, $28.5 million and $31.1 million; and Total assets, $132.9 million and $153.8 million, respectively.