Related-Party Transactions - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 07, 2013	Oct. 07, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Accounts payable to affiliates			$ 1,012,000	$ 2,330,000
Franchise revenue		2,648,000		3,364,000	3,299,000
Amounts allocated for services rendered and rent for office space			3,064,000	3,354,000	3,325,000
Payments Of Stock Issuance Costs	5,972,000		5,972,000
IPO
Related Party Transaction [Line Items]
Payments Of Stock Issuance Costs	11,000,000		848,500
Stock issuance costs reimbursed			700,000
Advertising Funds
Related Party Transaction [Line Items]
Related party transactions expenses			1,148,000	1,153,000	1,190,000
Tails Inc
Related Party Transaction [Line Items]
Related party transactions expenses		244,000		267,000	227,000
Accounts payable to affiliates			0	2,270,000
Advertising Funds
Related Party Transaction [Line Items]
Accounts payable to affiliates			945,000
Sanctuary Inc.
Related Party Transaction [Line Items]
Related party transactions expenses				$ 709,000	$ 960,000