Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash	$ 160,750	$ 177,250
Accounts receivable, net of allowances	106,094	120,553
Inventories	38,062	32,740
Prepaid expenses and other current assets	30,546	11,367
Deferred cost of revenue, current portion	1,359	3,007
Total current assets	336,811	344,917
Property and equipment, net	16,835	14,736
Deferred cost of revenue, non-current portion		5,403
Intangible assets, net	1,892	2,030
Goodwill	1,382	1,382
Other non-current assets	3,560	3,429
Total Assets	360,480	371,897
Current Liabilities:
Accounts payable and accrued liabilities	111,776	128,757
Deferred revenue, current portion	33,948	34,501
Total current liabilities	145,724	163,258
Deferred revenue, non-current portion	13,549	48,511
Other long-term liabilities	7,731	7,849
Total Liabilities	167,004	219,618
Commitments and Contingencies (Note 7)
Stockholders’ Equity:
Preferred stock, $0.0001 par value
Common stock, $0.0001 par value	10	10
Additional paid-in capital	445,139	435,607
Accumulated deficit	(251,673)	(283,338)
Total stockholders’ equity	193,476	152,279
Total Liabilities and Stockholders’ Equity	$ 360,480	$ 371,897