Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	[1]
CURRENT ASSETS:
Cash and cash equivalents	$ 136,318	$ 107,343
Short-term investments	176,494	153,749
Restricted cash	72	68
Accounts receivable, net of allowance of $1,605 and $ 1,784 as of March 31, 2017 and December 31, 2016, respectively	44,882	62,571
Inventory	496	590
Prepaid expenses and other current assets	10,804	7,922
Total current assets	369,066	332,243
Property and equipment, net	22,465	21,496
Goodwill	36,389	37,448
Acquired intangible assets, net	3,581	8,393
Severance pay fund	5,773	5,070
Restricted cash	1,898	1,884
Deferred tax assets	1,460	1,220
Other assets	6,094	1,065
TOTAL ASSETS	446,726	408,819
CURRENT LIABILITIES:
Accounts payable	4,047	5,529
Accrued compensation and benefits	19,981	20,840
Accrued and other current liabilities	9,979	7,683
Deferred revenue	100,971	104,042
Total current liabilities	134,978	138,094
Other liabilities	7,932	6,637
Deferred revenue	24,178	26,429
Accrued severance pay	6,694	5,696
TOTAL LIABILITIES	173,782	176,856
Commitments and Contingencies (Note 6)
STOCKHOLDERS' EQUITY:
Preferred stock, $0.0001 par value - 5,000,000 shares authorized, no shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	0	0
Common stock, $0.0001 par value - 145,000,000 shares authorized, 33,454,542 and 33,088,990 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	3	3
Additional paid-in capital	528,985	510,257
Accumulated deficit	(256,323)	(276,819)
Accumulated other comprehensive income (loss)	279	(1,478)
TOTAL STOCKHOLDERS' EQUITY	272,944	231,963
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 446,726	$ 408,819

[1] The Condensed Consolidated Balance Sheet as of December 31, 2016 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.