Balance Sheet Account Detail - Schedule of Accounts Payable and Other Accrued Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade accounts payable and other accrued liabilities	$ 30,488	$ 26,684
Accrued rebates	8,350	18,166
Accrued product royalty	4,723	4,908
Allowance for returns	2,309	1,394
Accrued data and distribution fees	4,222	1,830
Accrued GPO administrative fees	384	1,058
Accrued inventory management fee	540	498
Allowance for chargebacks	1,467	2,001
Accounts payable and other accrued liabilities	$ 52,483	$ 56,539