Investment in Receivable Portfolios, Net - Establishment of Negative Allowance (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Purchase price		$ 659,872
Allowance for credit losses	$ 79,028,043	1,703,420
Amortized cost		2,363,292
Noncredit discount	132,533,142	3,464,670
Face value	214,889,335	5,827,962
Write-off of amortized cost	(82,356,193)	(2,363,292)
Write-off of noncredit discount	(132,533,142)	(3,464,670)
Negative allowance	$ 3,328,150	659,872
Negative allowance for expected recoveries - current period purchases		$ 659,872	$ 1,046,696	$ 1,131,898