Related-Party Transactions - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Oct. 07, 2013 IPO	Sep. 30, 2013 IPO	Sep. 30, 2013 IPO	Sep. 30, 2013 RMCO	Sep. 30, 2012 RMCO	Sep. 30, 2013 RMCO	Sep. 30, 2012 RMCO	Dec. 31, 2012 RMCO	Sep. 30, 2013 RMCO Advertising Funds	Sep. 30, 2012 RMCO Advertising Funds	Sep. 30, 2013 RMCO Advertising Funds	Sep. 30, 2012 RMCO Advertising Funds	Sep. 30, 2013 RMCO Tails Inc.	Sep. 30, 2012 RMCO Tails Inc.	Sep. 30, 2013 RMCO Tails Inc.	Sep. 30, 2012 RMCO Tails Inc.	Sep. 30, 2012 RMCO Sanctuary Inc.	Sep. 30, 2012 RMCO Sanctuary Inc.
Related Party Transaction [Line Items]
Related party transactions expenses									$ 286,000	$ 292,000	$ 859,000	$ 865,000	$ 97,000	$ 74,000	$ 244,000	$ 196,000	$ 283,000	$ 878,000
Accounts payable to affiliates				2,325,000		2,325,000		2,270,000
Franchise revenue				912,000	858,000	2,648,000	2,550,000
Amounts allocated for services rendered and rent for office space				838,000	828,000	2,459,000	2,515,000
Offering expenses	$ 632,500	$ 76,000	$ 216,000			$ 4,816,000