Note 9 - Notes Payable and Variable Interest Entities - Summary of Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Unrestricted cash and cash equivalents	$ 135,379	$ 60,968
Restricted cash and cash equivalents	41,015	80,786
Loans, interest and fees receivable, at fair value	4,386	6,306
Loans, interest and fees receivable, gross	998,209	541,344
Allowances for uncollectible loans, interest and fees receivable	(186,329)	(79,211)
Deferred revenue	(90,307)	(43,897)
Total Assets held by VIEs	936,266	582,608
Notes Payable, at face value held by VIEs	749,209	390,927
Notes Payable, at fair value held by VIEs	3,920	5,651
Maximum exposure to loss due to involvement with VIEs	654,300	438,500
Variable Interest Entity, Primary Beneficiary [Member]
Unrestricted cash and cash equivalents	78,700	16,800
Restricted cash and cash equivalents	25,900	61,000
Loans, interest and fees receivable, at fair value	3,900	5,700
Loans, interest and fees receivable, gross	857,200	403,400
Allowances for uncollectible loans, interest and fees receivable	(168,800)	(57,400)
Deferred revenue	(40,700)	(13,200)
Total Assets held by VIEs	756,200	416,300
Notes Payable, at face value held by VIEs	701,100	366,700
Notes Payable, at fair value held by VIEs	$ 3,900	$ 5,700