Acquisitions - Additional Information (Details) $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended
	Dec. 04, 2017 store	Oct. 06, 2017 USD ($) store	Jan. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2018 USD ($)
Camira Administration Corp. and Subsidiaries (“GPMX”)
Business Acquisition [Line Items]
Percentage of voting interests acquired		100.00%
Number of pawn stores acquired | store		112
Payments to acquire businesses		$ 53,400			$ 6,700
Contingent consideration liability		$ 2,250
Duration of performance to determine consideration due		24 months
Revenue of acquiree since acquisition date				$ 11,000		$ 23,300
Net income of acquiree since acquisition				1,800		3,800
Acquisition related costs				$ 0		$ 400
Bazareno
Business Acquisition [Line Items]
Number of pawn stores acquired | store	21
Payments to acquire businesses			$ 1,600
Aggregate purchase price for acquisition		$ 61,700