Summary of Acquisitions of Lease Contracts, Merchandise and Related Assets of Sales and Lease Ownership Stores (Parenthetical) (Detail) (USD $)			3 Months Ended
Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Customer relationship intangibles	Mar. 31, 2013 Non-compete intangibles	Mar. 31, 2013 Acquired franchise development rights	Mar. 31, 2013 Sales and Lease Ownership	Mar. 31, 2012 Sales and Lease Ownership	Mar. 31, 2012 HomeSmart
Business Acquisition [Line Items]
Amortization period of intangible assets			2 years	3 years	10 years
Goodwill	$ 234,749,000	$ 234,195,000				$ 471,000	$ 2,700,000	$ 216,000

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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