Balance Sheet Account Detail - Schedule of Accounts Payable and Other Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade accounts payable and other accrued liabilities	$ 27,719	$ 30,488
Accrued rebates	8,910	8,350
Accrued product royalty	3,519	4,723
Allowance for returns	2,553	2,309
Accrued data and distribution fees	2,611	4,222
Accrued GPO administrative fees	384	384
Accrued inventory management fee	876	540
Allowance for chargebacks	1,656	1,467
Accounts payable and other accrued liabilities	$ 48,228	$ 52,483