(12) Fair Value Measurements (Details - Reconciliation of Finance Receivables) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Balance at beginning of period	$ 1,444,038	$ 821,066
Finance receivables at fair value acquired during period	739,734	1,004,194	$ 914,949
Payments received on finance receivables at fair value	(496,747)	(292,948)
Net interest income accretion on fair value receivables	(133,771)	(90,383)	(26,162)
Mark to fair value	(29,528)	2,109
Balance at end of period	$ 1,523,726	$ 1,444,038	$ 821,066