Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 174,167	$ 177,250
Accounts receivable, net of allowances	123,612	120,553
Inventories	39,431	32,740
Prepaid expenses and other current assets	15,131	11,367
Deferred cost of revenue, current portion	1,439	3,007
Total current assets	353,780	344,917
Property and equipment, net	20,212	14,736
Deferred cost of revenue, non-current portion		5,403
Intangible assets, net	1,754	2,030
Goodwill	1,382	1,382
Other non-current assets	4,540	3,429
Total Assets	381,668	371,897
Current Liabilities:
Accounts payable and accrued liabilities	111,026	128,757
Deferred revenue, current portion	39,151	34,501
Total current liabilities	150,177	163,258
Deferred revenue, non-current portion	12,435	48,511
Other long-term liabilities	7,291	7,849
Total Liabilities	169,903	219,618
Commitments and contingencies (Note 7)
Stockholders’ Equity:
Preferred stock, $0.0001 par value
Common stock, $0.0001 par value	11	10
Additional paid-in capital	462,901	435,607
Accumulated deficit	(251,147)	(283,338)
Total stockholders’ equity	211,765	152,279
Total Liabilities and Stockholders’ Equity	$ 381,668	$ 371,897