Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 120,128	$ 9,633
Short-term deposits	102	4,344
Restricted cash	0	171
Trade receivables (net of allowance for doubtful accounts of $ 178 at June 30, 2014 and $ 139 at December 31, 2013)	18,854	28,268
Prepaid expenses and other current assets	1,355	1,357
Total current assets	140,439	43,773
Long-term assets:
Other assets	295	1,625
Property and equipment, net	2,610	1,856
Total long-term assets	2,905	3,481
Total assets	143,344	47,254
Current liabilities:
Trade payables	2,300	2,163
Accrued expenses and other liabilities	12,883	11,643
Deferred revenues	25,868	26,591
Total current liabilities	41,051	40,397
Long-term liabilities:
Deferred revenues	2,146	2,109
Warrants to purchase convertible preferred stock	0	2,866
Severance pay	1,440	1,101
Other liabilities	15	14
Total long-term liabilities	3,601	6,090
Share capital
Common stock of $ 0.001 par value - Authorized: 200,000,000 shares at June 30, 2014 and 26,000,000 at December 31, 2013; Issued and outstanding: 24,456,389 shares at June 30, 2014 and 3,953,314 shares at December 31, 2013	24	4
Accumulated other comprehensive income	47
Additional paid-in capital	159,087	4,741
Accumulated deficit	(60,466)	(47,753)
Total stockholders' equity (deficiency)	98,692	(43,008)
Total liabilities, convertible preferred stock and stockholders' equity (deficiency)	143,344	47,254
Preferred Stock [Member]
Convertible preferred stock:
Preferred A, B, C, D and E stock of $ 0.001 par value - Authorized: no shares at June 30, 2014 and 16,986,384 shares at December 31, 2013; Issued and outstanding: no shares at June 30, 2014 and 15,082,141 shares at December 31, 2013		43,775
Share capital
Total stockholders' equity (deficiency)	$ 0	$ 43,775