Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss carryforwards	$ 3,255	$ 1,199
Intangible assets	2,351	3,574
Sale-leaseback, net	888	1,224
Allowance for returns and discounts	4,043	4,308
Stock-based compensation	10,963	9,884
Tax credit carryforwards	3,430	2,341
Other, net	4,066	5,200
Total deferred tax assets	28,996	27,730
Valuation allowance for deferred tax assets	(7,774)	(3,087)
Total deferred tax assets	21,222	24,643
Deferred tax liabilities:
Convertible Senior Notes	(7,592)	(9,474)
Intangible assets	(7,557)	(9,977)
Property, plant and equipment	(6,131)	(7,162)
Deferred Tax Liabilities, Gross	(21,280)	(26,613)
Total deferred tax liabilities	$ (58)	$ (1,970)