Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets (liabilities):
Deferred revenue	$ 14,020	$ 12,639
Stock compensation	6,034	6,287
Inventory related items	2,541	2,713
Tax credit carry forwards	2,579	2,168
Reserves and accruals	0	327
Loss carry forwards	667	12
Other, net	697	0
Total net deferred tax assets	26,538	24,146
Intangibles	28,213	26,485
Depreciation and amortization	(17,185)	(14,331)
Reserves and accruals	(601)	0
Other, net	0	194
Total deferred tax liabilities	(45,999)	(41,010)
Net deferred tax liabilities	(19,461)	$ (16,864)
Valuation allowance	$ 0