(9) Fair Value Measurements (Details - Reconciliation of Finance Receivables) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Balance at beginning of period	$ 1,537,649	$ 1,158,365	$ 1,444,038	$ 821,066
Finance receivables at fair value acquired during period	173,209	261,929	572,938	756,555
Payments received on finance receivables at fair value	(132,847)	(83,384)	(354,910)	(200,889)
Net interest income accretion on fair value receivables	(33,904)	(24,309)	(98,060)	(64,131)
Mark to fair value	(3,152)	604	(23,051)	604
Balance at end of period	$ 1,540,955	$ 1,313,205	$ 1,540,955	$ 1,313,205