Investment in Receivable Portfolios, Net - Establishment of Negative Allowance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Receivables [Abstract]
Purchase price	$ 169,505	$ 170,178
Allowance for credit losses	350,186	374,575
Amortized cost	519,691	544,753
Noncredit discount	657,058	784,112
Face value	1,176,749	1,328,865
Write-off of amortized cost	(519,691)	(544,753)
Write-off of noncredit discount	(657,058)	(784,112)
Negative allowance	169,505	170,178
Negative allowance for expected recoveries - current period purchases	$ 169,505	$ 170,178