Balance Sheet Components (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventories:
Raw materials	$ 14,734	$ 11,582
Work in process	9,332	1,653
Finished goods	50,059	33,359
Total inventories	74,125	46,594
Property and equipment:
Equipment	57,541	43,533
Furniture and fixtures	6,296	5,897
Leasehold improvements	9,531	9,063
Software	34,144	30,693
Construction in progress	7,469	3,651
Property and equipment, gross	114,981	92,837
Accumulated depreciation and amortization	(73,947)	(60,528)
Total property and equipment, net	41,034	32,309
Other long term assets:
Capitalized software, net	31,219	26,011
Other assets	1,393	1,883
Total other long term assets, net	32,612	27,894
Accrued liabilities:
Advance payments from customers	5,855	8,327
Rebates and lease buyouts	4,577	4,702
Group purchasing organization fees	3,310	2,983
Taxes payable	4,057	2,768
Other accrued liabilities	15,010	11,353
Total accrued liabilities	$ 32,809	$ 30,133