Other income and operating expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other income
Origination income	$ 2,495	$ 808
Release of repair and denial reserve	136	(89)
Other	1,442	181
Total other income	4,073	900
Other operating expenses
Origination costs	3,025	1,189
Technology expense	1,580	1,101
Impairment on real estate	2,969	305
Rent and property tax expense	1,184	691
Recruiting, training and travel expenses	624	587
Marketing expense	546	545
Loan acquisition costs	98	110
Financing costs on purchased future receivables	624
Other	3,094	2,333
Total other operating expenses	$ 13,744	$ 6,861