Related-Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Related Party Transaction [Line Items]
Accounts payable to affiliates	$ 1,059,000		$ 1,059,000		$ 1,017,000
Franchise revenue		933,000		1,736,000
Amounts allocated for services rendered and rent for office space	550,000	827,000	1,112,000	1,596,000
Advertising Fund
Related Party Transaction [Line Items]
Related party transactions expenses	288,000	289,000	571,000	572,000
Tails Inc
Related Party Transaction [Line Items]
Related party transactions expenses		76,000		147,000
Accounts payable to affiliates	$ 958,000		$ 958,000		$ 945,000