Related-Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Accounts payable to affiliates	$ 1,186,000		$ 1,114,000
Affiliated Entity
Related Party Transaction [Line Items]
Accounts payable to affiliates	1,186,000		1,114,000
Amounts allocated for services rendered and rent for office space	416,000	562,000
Advertising Funds
Related Party Transaction [Line Items]
Related party transactions expenses	282,000	283,000
Tails Inc.
Related Party Transaction [Line Items]
Accounts payable to affiliates	$ 1,093,000		$ 1,031,000