(9) Fair Value Measurements (Details - Reconciliation of Finance Receivables) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Balance at beginning of period	$ 1,559,697	$ 997,552	$ 1,444,038	$ 821,066
Finance receivables at fair value acquired during period	134,447	249,873	399,729	494,626
Payments received on finance receivables at fair value	(112,505)	(68,005)	(222,063)	(117,505)
Net interest income accretion on fair value receivables	(34,441)	(21,055)	(64,156)	(39,822)
Mark to fair value	(9,549)	0	(19,899)	0
Balance at end of period	$ 1,537,649	$ 1,158,365	$ 1,537,649	$ 1,158,365