Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid insurance	$ 8,646	$ 8,264
Prepaid marketing and advertising costs	3,202	1,439
Other	7,476	6,657
Total prepaid expenses and other current assets	$ 19,324	$ 16,360