Investment in Receivable Portfolios, Net (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Investment in Receivable Portfolios, Net (Additional Textual) [Abstract]
Investment in receivable portfolios collection forecast estimate	$ 103,400,000		$ 103,400,000
Face value of receivable portfolios	1,100,000,000	2,000,000,000	10,000,000,000	7,900,000,000
Purchase price of receivable portfolios	47,300,000	65,700,000	408,800,000	250,100,000
Percentage of face value on purchase cost	4.50%	3.20%	4.10%	3.20%
Estimated future collections at acquisition for receivable portfolios	80,400,000	121,000,000	717,300,000	485,300,000
Zero Basis Revenue	$ 5,500,000	$ 4,200,000	$ 17,600,000	$ 10,100,000
Minimum [Member]
Investment In Receivable Portfolios, Net (Textual) [Abstract]
Collection forecast estimated on receivable portfolios			84 months
Maximum [Member]
Investment In Receivable Portfolios, Net (Textual) [Abstract]
Collection forecast estimated on receivable portfolios			96 months