Deferred Charges (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Initial franchise fees	$ 6,201	$ 5,810
Deferred financing costs	9,500	7,581
Deferred Costs Gross, Total	15,701	13,391
Less accumulated amortization	6,806	4,467
Total	$ 8,895	$ 8,924