Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 48,707	$ 56,689
Marketable securities	39,770	39,731
Short-term deposits	70,438	40,137
Trade receivables (net of allowance for doubtful accounts of $483 and $433 at December 31, 2018 and December 31, 2017, respectively)	83,223	75,596
Prepaid expenses and other current assets	16,952	14,346
Total current assets	259,090	226,499
Long-term assets:
Other assets	8,565	7,243
Property and equipment, net	17,323	11,896
Total long-term assets	25,888	19,139
Total assets	284,978	245,638
Current liabilities:
Trade payables	2,620	635
Accrued expenses and other short term liabilities	55,991	42,453
Deferred revenues	87,729	73,493
Total current liabilities	146,340	116,581
Long-term liabilities:
Deferred revenues	6,487	6,608
Other liabilities	6,781	7,807
Total long-term liabilities	13,268	14,415
Stockholders’ equity:
Common stock of $0.001 par value - Authorized: 200,000,000 shares at December 31, 2018 and 2017; Issued and outstanding: 29,576,880 shares at December 31, 2018 and 28,146,162 shares at December 31, 2017	30	28
Accumulated other comprehensive income (loss)	(3,633)	136
Additional paid-in capital	266,941	223,868
Accumulated deficit	(137,968)	(109,390)
Total stockholders’ equity	125,370	114,642
Total liabilities and stockholders’ equity	$ 284,978	$ 245,638