Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 51,070	$ 48,315
Short-term deposits	70,250	65,493
Trade receivables (net of allowance for doubtful accounts of $429 and $372 at March 31, 2017 and December 31, 2016, respectively)	27,466	53,861
Prepaid expenses and other current assets	7,792	3,650
Total current assets	156,578	171,319
Long-term assets:
Other assets	778	609
Property and equipment, net	10,786	9,910
Total long-term assets	11,564	10,519
Total assets	168,142	181,838
Current liabilities:
Trade payables	1,582	1,288
Accrued expenses and other short term liabilities	21,579	28,479
Deferred revenues	54,576	58,478
Total current liabilities	77,737	88,245
Long-term liabilities:
Deferred revenues	4,261	3,562
Severance pay	1,445	1,664
Other liabilities	5,429	5,628
Total long-term liabilities	11,135	10,854
Stockholders’ equity:
Common stock of $0.001 par value - Authorized: 200,000,000 shares at March 31, 2017 and December 31, 2016; Issued and outstanding: 27,204,790 shares at March 31, 2017 and 26,821,762 shares at December 31, 2016	27	27
Accumulated other comprehensive income (loss)	1,645	(479)
Additional paid-in capital	197,237	189,335
Accumulated deficit	(119,639)	(106,144)
Total stockholders’ equity	79,270	82,739
Total liabilities and stockholders’ equity	$ 168,142	$ 181,838