Other Assets - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deposits	$ 935	$ 189
Prepaid royalty	234	242
Other assets	385	431
Total other assets	1,554	$ 862
Increase in deposits	$ 700