Basis and Summary of Significant Accounting Policies - Additional Information (Detail) Share data in Thousands, unless otherwise specified	3 Months Ended					3 Months Ended		0 Months Ended					0 Months Ended
	Mar. 31, 2015 USD ($) Store	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($) Store	Mar. 31, 2015 Level 2 USD ($)	Dec. 31, 2014 Level 2 USD ($)	Mar. 31, 2015 Employee	Mar. 31, 2015 Non Employee Director	Oct. 14, 2011 Variable Interest Entity, Not Primary Beneficiary	Mar. 31, 2015 Variable Interest Entity, Not Primary Beneficiary USD ($) Store	Mar. 31, 2015 Variable Interest Entity, Not Primary Beneficiary GBP (£)	Dec. 31, 2014 Variable Interest Entity, Not Primary Beneficiary USD ($)	Dec. 31, 2014 Variable Interest Entity, Not Primary Beneficiary GBP (£)	Apr. 14, 2014 Progressive Finance Holdings, LLC USD ($) retail_location state	Apr. 14, 2014 Progressive Finance Holdings, LLC state
Significant Accounting Policies [Line Items]
Business acquisition, percentage of voting interests acquired														100.00%
Acquisitions of businesses, net of cash acquired													$ 700,000,000
Number of retail locations (over 15,000)													15,000
Number of states in which entity operates														46
Percentage of common stock outstanding								11.50%
Number of retail stores	1,318		1,326						67	67
Held to maturity securities									20,700,000	14,000,000	21,300,000	13,700,000
Held to maturity securities, face value										10,000,000
Maximum exposure to any potential losses associated with VIE									20,700,000
Uncertain tax benefits that, if recognized, would affect effective tax rate	2,300,000		2,100,000
Anti-dilutive Securities excluded from the computation of earnings per share assuming dilution (in shares)	468	140
Inventory Valuation Reserves	29,300,000		27,600,000
Lease merchandise adjustments	29,300,000	13,400,000
Assets held-for-sale, at carrying value	6,000,000		6,400,000
Percentage of receipt of base compensation (up to)						75.00%	100.00%
Percentage of receipt of incentive pay compensation (up to)						100.00%	100.00%
Deferred compensation liability				12,321,000	12,677,000
Cash surrender value of company-owned life insurance ("COLI") contracts	14,800,000		14,500,000
Benefits paid	$ 710,000	$ 501,000