Acquisitions and Dispositions - Summary of Estimated Fair Value of Assets and Liabilities at Acquisition Date (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Oct. 07, 2013
Business Acquisition [Line Items]
Goodwill	$ 71,871	$ 72,463	$ 72,781
HBN and Tails
Business Acquisition [Line Items]
Accounts and notes receivable, net				$ 2,434
Other current assets				29
Franchise agreements				23,008
Goodwill				2,032
Other assets				15
Accrued liabilities				(213)
Total purchase price				27,305
HBN
Business Acquisition [Line Items]
Accounts and notes receivable, net				354
Other current assets				17
Franchise agreements				6,515
Goodwill				321
Other assets				15
Accrued liabilities				(92)
Total purchase price				7,130
Tails Inc.
Business Acquisition [Line Items]
Accounts and notes receivable, net				2,080
Other current assets				12
Franchise agreements				16,493
Goodwill				1,711
Accrued liabilities				(121)
Total purchase price				$ 20,175