Interim Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 21,469	$ 22,260
Short term bank deposits	57,753	46,139
Marketable securities	77,587	77,469
Trade receivables	19,351	26,156
Prepaid expenses and other current assets	7,630	5,264
Total current assets	183,790	177,288
Long-term bank deposits	14,510	21,864
Severance pay fund	9,629	9,026
Deferred tax assets, net	6,186	5,924
Property and equipment, net	7,265	7,344
Operating lease right-of-use assets	9,501
Goodwill	46,612	46,612
Intangible assets, net	2,411	2,700
Investments in other company	936	936
Other long-term assets	5,992	5,569
Total long-term assets	103,042	99,975
Total assets	286,832	277,263
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade payables	750	632
Deferred revenues	2,811	3,593
Accrued expenses and other payables	3,710	4,344
Accrued payroll and related benefits	14,139	13,183
Operating lease liabilities	1,549
Total current liabilities	22,959	21,752
Accrued severance pay	10,349	9,632
Operating lease liabilities	7,651
Other accrued liabilities	561
Total long-term liabilities	18,561	9,632
Stockholders’ equity:
Preferred stock: $0.001 par value: 5,000,000 shares authorized; none issued and outstanding
Common stock: $0.001 par value: 60,000,000 shares authorized; 23,595,160 shares issued at March 31, 2019 (unaudited) and December 31, 2018. 21,972,816 and 21,787,860 shares outstanding at March 31, 2019 (unaudited) and December 31, 2018, respectively	22	22
Additional paid in-capital	221,071	223,250
Treasury stock at cost (1,622,344 and 1,807,300 shares of common stock at March 31, 2019 (unaudited) and December 31, 2018, respectively)	(35,686)	(39,132)
Accumulated other comprehensive loss	(427)	(1,114)
Retained earnings	60,332	62,853
Total stockholders’ equity	245,312	245,879
Total liabilities and stockholders’ equity	$ 286,832	$ 277,263