Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Compensation and benefits	$ 10,525	$ 11,198
Accrued interest	94	4,994
Accrued professional fees	1,493	1,508
Research and development services	360	248
Freight, distribution and operations	2,962	3,069
Marketing expense	490	978
Accrued rebates, discounts and chargebacks	2,085	2,164
Other	687	704
Accrued expenses	$ 18,696	$ 24,863