Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended																					0 Months Ended					1 Months Ended				12 Months Ended														12 Months Ended					0 Months Ended	12 Months Ended
	Dec. 31, 2014 USD ($) Segment store	Dec. 31, 2013 USD ($) store	Dec. 31, 2012 USD ($) store	Dec. 31, 2014 Software USD ($)	Dec. 31, 2013 Software USD ($)	Dec. 31, 2012 Software USD ($)	Dec. 31, 2014 Customer Relationships	Dec. 31, 2014 Non-Compete Agreements	Dec. 31, 2014 Acquired Franchise Development Rights	Dec. 31, 2014 Merchandise Not On Lease	Dec. 31, 2014 Restricted stock units	Dec. 31, 2013 Restricted stock units	Dec. 31, 2014 Operating Expense USD ($)	Dec. 31, 2014 Maximum Merchandise On Lease	Dec. 31, 2014 Maximum Buildings and Improvements	Dec. 31, 2014 Maximum Other depreciable property and equipment	Dec. 31, 2014 Maximum Software	Dec. 31, 2014 Minimum Merchandise On Lease	Dec. 31, 2014 Minimum Buildings and Improvements	Dec. 31, 2014 Minimum Other depreciable property and equipment	Dec. 31, 2014 Minimum Software	Oct. 14, 2011 Variable Interest Entity, Not Primary Beneficiary	Dec. 31, 2014 Variable Interest Entity, Not Primary Beneficiary USD ($) store	Dec. 31, 2014 Variable Interest Entity, Not Primary Beneficiary GBP (£)	Dec. 31, 2013 Variable Interest Entity, Not Primary Beneficiary USD ($)	Dec. 31, 2013 Variable Interest Entity, Not Primary Beneficiary GBP (£)	Jan. 31, 2014 RIMCO store right	Dec. 31, 2014 RIMCO USD ($) store	Dec. 31, 2013 RIMCO USD ($) store	Dec. 31, 2012 RIMCO store	Dec. 31, 2014 Sales and Lease Ownership and HomeSmart USD ($)	Dec. 31, 2013 Sales and Lease Ownership and HomeSmart USD ($)	Dec. 31, 2012 Sales and Lease Ownership and HomeSmart USD ($)	Dec. 31, 2014 Sales and Lease Ownership and HomeSmart Maximum USD ($)	Dec. 31, 2014 Sales and Lease Ownership and HomeSmart Minimum USD ($)	Dec. 31, 2014 Sales and Lease Ownership USD ($)	Dec. 31, 2013 Sales and Lease Ownership USD ($)	Dec. 31, 2012 Sales and Lease Ownership USD ($)	Dec. 31, 2014 Sales and Lease Ownership Agreement One	Dec. 31, 2014 Sales and Lease Ownership Agreement Two	Dec. 31, 2014 Sales and Lease Ownership Agreement Three	Dec. 31, 2014 HomeSmart store	Dec. 31, 2013 HomeSmart store	Dec. 31, 2012 HomeSmart store	Dec. 31, 2014 HomeSmart Agreement One	Dec. 31, 2014 HomeSmart Agreement Two	Dec. 31, 2014 HomeSmart Agreement Three	Dec. 31, 2014 Progressive	Dec. 31, 2014 Progressive Agreement Three	Apr. 14, 2014 Progressive Finance Holdings, LLC USD ($) retail_location state	Dec. 31, 2014 Progressive Finance Holdings, LLC Customer Lease Contracts		Dec. 31, 2014 Progressive Finance Holdings, LLC Internal Use Software	Dec. 31, 2014 Progressive Finance Holdings, LLC Technology	Dec. 31, 2014 Progressive Finance Holdings, LLC Merchant Relationships
Significant Accounting Policies [Line Items]
Ownership percentage																																																		100.00%
Business combination, consideration																																																		$ 700,000,000
Number of retail locations (over 15,000)																																																		15,000
Number of states in which entity operates																																																		46
Number of stores sold during period																											27
Number of franchise rights sold during period																											5
Percentage of common stock outstanding																						11.50%
Number of retail stores	1,326	1,370	1,324																				67	67				0	27	19												83	81	78
Held to maturity securities	21,311,000	112,391,000																					21,300,000	13,700,000	20,700,000	12,500,000
Held to maturity securities, face value																								10,000,000
Variable interest entity, reporting entity involvement, maximum loss exposure, amount																							21,300,000
Period of lease model																																							12 months	18 months	24 months				420 days	630 days	840 days		12 months
Non-refundable initial franchise fee																																		50,000	15,000
Percentage of royalty of gross revenue																																		6.00%	5.00%
Franchise royalties and fees	65,902,000	68,575,000	66,655,000																												1,000,000	1,700,000	2,400,000
Sales taxes													30,200,000
Royalty revenue																															58,800,000	59,100,000	56,500,000
Finance fee revenue																															3,700,000	5,100,000	4,900,000
Deferred franchise and area development agreement fees																															2,800,000	3,400,000
Shipping and handling costs	81,100,000	78,600,000	74,900,000
Advertising costs	50,500,000	43,000,000	36,500,000
Amount of cooperative advertising consideration netted against advertising expense	28,300,000	25,000,000	31,100,000
Prepaid advertising asset	1,300,000	2,400,000
Anti-dilutive Securities excluded from the computation of earnings per share assuming dilution		0									164,000	53,000
Lease merchandise, useful life										36 months				24 months				12 months
Lease merchandise, percentage of salvage value	0.00%
Allowance for lease merchandise write-offs	27,600,000	8,300,000
Lease merchandise adjustments	99,900,000	58,000,000	54,900,000
Threshold period past due for write-off of lease receivable	60 days																																															120 days
Property, plant and equipment, useful life															40 years	15 years	10 years		5 years	1 year	5 years
Depreciation expense for property, plant and equipment	53,700,000	53,300,000	53,100,000
Amortization expense	31,900,000	3,700,000	3,700,000	5,400,000	3,300,000	2,600,000
Impairment charge																																				805,000	3,800,000	1,060,000
Gains and losses on the disposal of assets held for sale	(754,000)		1,200,000
Assets Held for Sale	6,356,000	15,840,000																											9,700,000
Assets held-for-sale, capital leased assets, net																												7,200,000
Assets held-for-sale, property, plant and equipment																												2,500,000
Operating segments	5
Estimated useful lives of intangibles							2 years	3 years	10 years																																										1 year	[1]	3 years	10 years	12 years
Asset retirement obligations	2,700,000	2,400,000
Foreign currency transaction gains and losses	$ (2,300,000)	$ (1,000,000)	$ 1,974,000

[1] During the fourth quarter of 2014, the Company recorded adjustments to the customer lease contract intangible asset previously recorded based on the finalization of appraisals by the Company’s independent consultants. The measurement period adjustment resulted in a reduction of customer lease contract intangible assets and an increase in goodwill of $8.0 million and did not have a material effect on amortization expense in the consolidated financial statements in any period presented.