Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (1,587)	$ (2,041)
Adjustments required to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	722	869
Equity-based compensation expenses related to employees’ stock options, SARs and RSUs	3,965	3,359
Realized losses from sale of marketable securities, net	43	37
Capital loss from sale and disposal of property and equipment	35
Amortization of intangible assets	208	850
Operating lease amortization expenses	950
Change in operating lease liability	(437)
Accrued interest and amortization of premium on marketable securities and deposits	24	356
Change in operating assets and liabilities:
Deferred income tax assets and liabilities, net	(1,315)	(268)
Trade receivables, net	(3,678)	(3,234)
Other accounts receivable and prepaid expenses	414	(47)
Inventories	624	1,030
Long-term prepaid expenses and lease deposits	80	(78)
Trade payables	(1,720)	1,195
Accrued compensation and benefits	497	317
Income tax accruals	507	(59)
Accrued expenses and other accounts payable	119	(167)
Accrued severance pay, net		(67)
Accrued pensions	17	19
Net cash provided by (used in) operating activities	(532)	2,071
Cash flows from investing activities:
Purchase of marketable securities	(16,543)	(14,379)
Purchase of short-term deposits	(3,000)	(3,000)
Proceeds from maturity of marketable securities	13,555	8,455
Proceeds from sales of marketable securities	4,988	4,810
Proceeds from redemption of short-term deposits	5,974	3,000
Proceeds from sale of fixed assets	23
Purchases of property and equipment	(3,892)	(778)
Other investing activities		(104)
Net cash provided by (used in) investing activities	1,105	(1,996)
Cash flows from financing activities:
Issuance of common stock and treasury stock upon exercise of stock options	1,097	442
Purchase of treasury stock		(5,691)
Net cash provided by (used in) financing activities	1,097	(5,249)
Increase (decrease) in cash and cash equivalents	1,670	(5,174)
Cash and cash equivalents at the beginning of the year	12,639	21,848
Erosion due to exchange rate differences	(23)	(25)
Cash and cash equivalents at the end of the year	$ 14,286	$ 16,649