Balance Sheet Components (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventories:
Raw materials	$ 11,582	$ 8,254
Work in process	1,653	64
Finished goods	33,359	23,236
Total inventories, net	46,594	31,554
Property and equipment:
Equipment	43,533	42,829
Furniture and fixtures	5,897	5,689
Leasehold improvements	9,063	8,701
Software	30,693	28,920
Construction in progress	3,651	1,538
Property and equipment, gross	92,837	87,677
Accumulated depreciation and amortization	(60,528)	(51,499)
Total property and equipment, net	32,309	36,178	$ 35,254
Other long term assets:
Capitalized software, net	26,011	19,643
Other assets	1,883	3,630
Total other long term assets, net	27,894	23,273
Accrued liabilities:
Advance payments from customers	8,327	4,834
Rebates and lease buyouts	4,702	6,512
Group purchasing organization fees	2,983	3,475
Taxes payable	2,768	2,181
Other accrued liabilities	11,353	2,297
Total accrued liabilities	30,133	19,299
Deferred Revenue Arrangement [Line Items]
Total deferred gross profit	25,708	28,558
Products with Installation Services
Deferred Revenue Arrangement [Line Items]
Sales of medication and supply dispensing systems including packaging equipment	41,396	36,947
Less: cost of revenues, excluding installation costs	(15,688)	(8,389)
Total deferred gross profit	$ 25,708	$ 28,558