Schedule of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Accrued Liabilities [Line Items]
Employee compensation	$ 3,439	$ 5,586
Accrued interest payable	815	204
Accrued purchases	566	382
Taxes	1,604	1,692
Contingent consideration		6,119
Royalties	857	248
Professional fees	494	411
Unearned revenue	441	408
Other accrued expenses	900	964
Total	$ 9,116	$ 16,014