Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (1,773)	$ (5,434)
Adjustments required to reconcile net loss to net cash provided by operating activities:
Depreciation	1,222	1,235
Equity-based compensation expenses related to employees’ stock options, SARs and RSUs	8,212	6,546
Realized gains from sale of marketable securities, net	(22)	(39)
Capital loss (gain) from sale and disposal of property and equipment	1	(48)
Amortization of intangible assets	1,197	636
Operating lease amortization expenses	1,855	1,778
Change in operating lease liability	(2,094)	(1,857)
Accrued interest and amortization of premium on marketable securities and deposits	840	284
Change in operating assets and liabilities:
Deferred income tax assets and liabilities, net	697	(385)
Trade receivables, net	(7,063)	4,130
Other accounts receivable and prepaid expenses	91	(601)
Inventories	2,052	(713)
Long-term prepaid expenses and lease deposits	390	(381)
Trade payables	554	(796)
Accrued compensation and benefits	4,767	565
Income tax accruals	48	373
Accrued expenses and other accounts payable	861	518
Accrued severance pay, net	142	93
Accrued pensions	10	29
Net cash provided by operating activities	11,987	5,933
Cash flows from investing activities:
Purchase of marketable securities	(25,893)	(69,390)
Purchase of short-term deposits	(13,000)	(10,953)
Proceeds from maturity of marketable securities	19,818	46,924
Proceeds from sales of marketable securities	6,972	24,553
Proceeds from redemption of short-term deposits	9,500	7,953
Proceeds from sale of fixed assets	12	48
Purchases of property and equipment	(931)	(700)
Decrease (increase) in restricted deposits	(34)	17
Acquisition of initially consolidated subsidiary (1)		(13,944)
Other investing activities	172	0
Net cash used in investing activities	(3,384)	(15,492)
Cash flows from financing activities:
Issuance of common stock and treasury stock upon exercise of stock options	853	1,477
Repayment of a short – term bank loan	(211)	(219)
Purchase of treasury stock	(5,716)	(3,736)
Net cash used in financing activities	(5,074)	(2,478)
Increase (decrease) in cash and cash equivalents	3,529	(12,037)
Cash and cash equivalents at the beginning of the year	16,936	28,737
Erosion due to exchange rate differences	(43)	(52)
Cash and cash equivalents at the end of the year	$ 20,422	$ 16,648