Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 168,252	$ 68,096
Short-term investments	96,555	41,624
Restricted cash	79	62
Accounts receivable, net of allowance of $1,438 and $ 215 as of December 31, 2015 and 2014, respectively	61,051	47,446
Inventory	815	259
Deferred tax assets	0	408
Prepaid expenses and other current assets	7,965	3,927
Total current assets	334,717	161,822
Property and equipment, net	12,164	7,618
Goodwill	34,972	34,972
Acquired intangible assets, net	7,991	9,399
Severance pay fund	4,530	3,980
Restricted cash	1,665	1,665
Deferred tax assets	588	329
Other assets	1,042	860
TOTAL ASSETS	397,669	220,645
CURRENT LIABILITIES:
Accounts payable	6,870	5,376
Accrued compensation and benefits	20,259	15,749
Accrued and other current liabilities	14,283	6,376
Deferred revenue	79,132	56,077
Total current liabilities	120,544	83,578
Other liabilities	4,515	10,408
Deferred revenue	27,525	25,098
Accrued severance pay	4,884	4,318
TOTAL LIABILITIES	$ 157,468	$ 123,402
Commitments and Contingencies (Note 11)
STOCKHOLDERS' EQUITY:
Preferred stock, $0.0001 par value - 5,000,000 shares authorized, no shares issued and outstanding as of December 31, 2015 and 2014, respectively	$ 0	$ 0
Common stock, $0.0001 par value - 145,000,000 shares authorized, 31,837,144 and 26,895,480 shares issued and outstanding as of December 31, 2015 and 2014, respectively	3	2
Additional paid-in capital	448,069	256,388
Accumulated deficit	(206,540)	(157,658)
Accumulated other comprehensive loss	(1,331)	(1,489)
TOTAL STOCKHOLDERS' EQUITY	240,201	97,243
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 397,669	$ 220,645