Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses	$ 940,000	$ 6,347,000
Receivables at fair value	1,945,000	5,608,000
Allowance for uncollectible advances	41,688,000	164,225,000
Servicing rights at fair value	563,144,000	714,774,000
Other assets at fair value	18,387,000	29,394,000
Payables and accrued liabilities at fair value	13,737,000	1,282,000
Mortgage-backed debt at fair value	$ 131,313,000	$ 348,682,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	91,408	0
Preferred stock, shares outstanding	91,408	0
Preferred stock, liquidation preference	$ 97,246
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	5,328,417	37,373,616
Common stock, shares outstanding	5,328,417	37,373,616
Variable Interest Entity, Primary Beneficiary [Member]
Mortgage-backed debt at fair value	$ 131,313,000	$ 348,682,000
Mandatorily Convertible Preferred Stock [Member]
Preferred stock, shares authorized	100,000