Fair Value of Financial Instruments - Financial Assets and Liabilities Not Measured at Fair Value (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other asset impairment charges	$ 1,900
Carrying Value
Financial assets:
Cash and cash equivalents	70,956	$ 46,527	$ 67,012
Fees and service charges receivable	30,418	46,686	46,991
Total assets	331,933	463,491	493,020
Financial liabilities:
Total liabilities	500,000	635,000	640,000
Carrying Value | Revolving unsecured credit facilities
Financial liabilities:
Debt	200,000	335,000	340,000
Carrying Value | Senior unsecured notes (outstanding principal)
Financial liabilities:
Debt	300,000	300,000	300,000
Carrying Value | Pawn loans
Financial assets:
Loans receivable	230,383	369,527	375,167
Carrying Value | Consumer loans, net
Financial assets:
Loans receivable	176	751	3,850
Estimated Fair Value
Financial assets:
Cash and cash equivalents	70,956	46,527	67,012
Fees and service charges receivable	30,418	46,686	46,991
Total assets	331,933	463,491	493,020
Financial liabilities:
Total liabilities	500,000	645,000	648,000
Estimated Fair Value | Revolving unsecured credit facilities
Financial liabilities:
Debt	200,000	335,000	340,000
Estimated Fair Value | Senior unsecured notes (outstanding principal)
Financial liabilities:
Debt	300,000	310,000	308,000
Estimated Fair Value | Pawn loans
Financial assets:
Loans receivable	230,383	369,527	375,167
Estimated Fair Value | Consumer loans, net
Financial assets:
Loans receivable	176	751	3,850
Estimated Fair Value | Level 1
Financial assets:
Cash and cash equivalents	70,956	46,527	67,012
Fees and service charges receivable	0	0	0
Total assets	70,956	46,527	67,012
Financial liabilities:
Total liabilities	0	0	0
Estimated Fair Value | Level 1 | Revolving unsecured credit facilities
Financial liabilities:
Debt	0	0	0
Estimated Fair Value | Level 1 | Senior unsecured notes (outstanding principal)
Financial liabilities:
Debt	0	0	0
Estimated Fair Value | Level 1 | Pawn loans
Financial assets:
Loans receivable	0	0	0
Estimated Fair Value | Level 1 | Consumer loans, net
Financial assets:
Loans receivable	0	0	0
Estimated Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0	0
Fees and service charges receivable	0	0	0
Total assets	0	0	0
Financial liabilities:
Total liabilities	500,000	645,000	648,000
Estimated Fair Value | Level 2 | Revolving unsecured credit facilities
Financial liabilities:
Debt	200,000	335,000	340,000
Estimated Fair Value | Level 2 | Senior unsecured notes (outstanding principal)
Financial liabilities:
Debt	300,000	310,000	308,000
Estimated Fair Value | Level 2 | Pawn loans
Financial assets:
Loans receivable	0	0	0
Estimated Fair Value | Level 2 | Consumer loans, net
Financial assets:
Loans receivable	0	0	0
Estimated Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0	0
Fees and service charges receivable	30,418	46,686	46,991
Total assets	260,977	416,964	426,008
Financial liabilities:
Total liabilities	0	0	0
Estimated Fair Value | Level 3 | Revolving unsecured credit facilities
Financial liabilities:
Debt	0	0	0
Estimated Fair Value | Level 3 | Senior unsecured notes (outstanding principal)
Financial liabilities:
Debt	0	0	0
Estimated Fair Value | Level 3 | Pawn loans
Financial assets:
Loans receivable	230,383	369,527	375,167
Estimated Fair Value | Level 3 | Consumer loans, net
Financial assets:
Loans receivable	$ 176	$ 751	$ 3,850