CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Restricted cash	$ 66,168	$ 54,765
Total gross loans receivable	882,356	553,722
Less: allowance for losses	72,543	86,162
Prepaid expenses and other	31,558	27,994
Accounts payable and accrued liabilities	75,701	49,624
Accrued interest	$ 11,106	$ 20,123
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	25,000,000	25,000,000
Preferred stock, issued (in shares)	0	0
Class A common stock, par value (in usd per share)	$ 0.001	$ 0.001
Class A common stock, authorized (in shares)	225,000,000	225,000,000
Class A common stock, issued (in shares)	47,961,467	47,525,807
Class A common stock, outstanding (in shares)	40,737,111	41,370,504
Treasury stock (in shares)	7,224,356	6,155,303
Variable Interest Entity
Restricted cash	$ 42,214	$ 31,994
Total gross loans receivable	700,834	360,431
Less: allowance for losses	51,642	54,129
Prepaid expenses and other	0	388
Accounts payable and accrued liabilities	6,840	34,055
Accrued interest	1,418	1,147
Debt	407,214	147,427
Issuance costs	$ 9,749	$ 7,766