Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	[1]
CURRENT ASSETS:
Cash and cash equivalents	$ 110,017	$ 168,252
Short-term investments	149,014	96,555
Restricted cash	69	79
Accounts receivable, net of allowance of $1,432 and $ 1,438 as of September 30, 2016 and December 31, 2015, respectively	45,702	61,051
Inventory	775	815
Prepaid expenses and other current assets	7,374	7,965
Total current assets	312,951	334,717
Property and equipment, net	20,521	12,164
Goodwill	34,972	34,972
Acquired intangible assets, net	6,935	7,991
Severance pay fund	5,137	4,530
Restricted cash	1,665	1,665
Deferred tax assets	771	588
Other assets	1,244	1,042
TOTAL ASSETS	384,196	397,669
CURRENT LIABILITIES:
Accounts payable	4,559	6,870
Accrued compensation and benefits	21,023	20,259
Accrued and other current liabilities	6,438	14,283
Deferred revenue	90,449	79,132
Total current liabilities	122,469	120,544
Other liabilities	5,349	4,515
Deferred revenue	26,101	27,525
Accrued severance pay	5,806	4,884
TOTAL LIABILITIES	159,725	157,468
Commitments and Contingencies (Note 7)	0	0
STOCKHOLDERS' EQUITY:
Preferred stock, $0.0001 par value - 5,000,000 shares authorized, no shares issued and outstanding as of September 30, 2016 and December 31, 2015, respectively	0	0
Common stock, $0.0001 par value - 145,000,000 shares authorized, 32,833,666 and 31,837,144 shares issued and outstanding as of September 30, 2016 and December 31, 2015, respectively	3	3
Additional paid-in capital	492,238	448,069
Accumulated deficit	(267,001)	(206,540)
Accumulated other comprehensive loss	(769)	(1,331)
TOTAL STOCKHOLDERS' EQUITY	224,471	240,201
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 384,196	$ 397,669

[1] The Condensed Consolidated Balance Sheet as of December 31, 2015 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.