Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 20,422	$ 16,936
Restricted deposit	579	548
Marketable securities and short-term deposits	52,945	50,615
Trade receivables	18,019	11,003
Other accounts receivable and prepaid expenses	3,359	3,460
Inventories	7,009	9,061
TOTAL CURRENT ASSETS	102,333	91,623
PROPERTY AND EQUIPMENT, NET	6,252	6,574
NON-CURRENT ASSETS:
Long-term marketable securities	59,434	60,454
Operating lease right of use	10,315	11,102
Long-term prepaid expenses and lease deposits	2,498	2,888
Deferred income taxes	6,012	6,893
Severance pay fund	15,655	16,285
Intangible assets, net	6,198	7,549
Goodwill	13,105	13,105
TOTAL NON-CURRENT ASSETS	113,217	118,276
TOTAL ASSETS	221,802	216,473
CURRENT LIABILITIES:
Trade payables	11,259	10,708
Operating lease liability	3,020	2,974
Accrued compensation and benefits	11,415	8,728
Income tax accruals and payables	3,605	3,620
Accrued expenses and other accounts payable	3,954	2,993
Short-term bank loans	0	211
Deferred income	89	172
TOTAL CURRENT LIABILITIES	33,342	29,406
NON-CURRENT LIABILITIES:
Deferred income taxes	898	1,073
Accrued severance pay	16,164	16,647
Operating lease liability	9,003	10,075
Other long-term liabilities	1,945	1,945
Accrued pensions	1,016	1,089
TOTAL NON-CURRENT LIABILITIES	29,026	30,829
STOCKHOLDERS’ EQUITY:
Common stock, $ 0.001 par value - Authorized shares: 50,000,000 shares at September 30, 2021 (unaudited) and December 31, 2020; Issued and outstanding shares: 24,181,505 and 23,709,924 shares at September 30, 2021 (unaudited) and December 31, 2020, respectively	24	24
Additional paid-in capital	404,806	396,335
Treasury stock at cost	(105,727)	(108,509)
Accumulated other comprehensive loss	(1,071)	(637)
Accumulated deficit	(138,598)	(130,975)
TOTAL STOCKHOLDERS’ EQUITY	159,434	156,238
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 221,802	$ 216,473