Interim Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (3,034)	$ (1,729)
Adjustments required to reconcile net loss to net cash provided by operating activities:
Depreciation	2,274	1,914
Amortization of intangible assets	1,412	938
Equity-based compensation	7,847	8,083
Realized loss, net on sale of available-for-sale marketable securities	38	30
Amortization of premiums on available-for-sale marketable securities	427	609
Unrealized foreign exchange loss	461	141
Changes in operating assets and liabilities:
Trade receivables	(657)	1,658
Prepaid expenses and other assets	(1,458)	(3,815)
Operating lease right-of-use assets	(903)
Accrued interest on bank deposits	(945)	(643)
Deferred tax, net	(3,856)	(949)
Trade payables	689	557
Deferred revenues	1,209	(785)
Accrued expenses and other payables	(257)	(802)
Accrued payroll and related benefits	251	(1,329)
Operating lease liability	823
Income taxes payable	(63)	55
Accrued severance pay, net	60	149
Net cash provided by operating activities	4,318	4,082
Cash flows from investing activities:
Acquisition of business	(11,000)
Purchase of property and equipment	(2,664)	(2,913)
Purchase of intangible assets	(10,140)	(1,960)
Investment in bank deposits	(13,346)	(21,596)
Proceeds from bank deposits	20,165	22,065
Investment in available-for-sale marketable securities	(18,738)	(15,516)
Proceeds from maturity of available-for-sale marketable securities	3,888	10,122
Proceeds from sale of available-for-sale marketable securities	22,561	7,803
Net cash used in investing activities	(9,274)	(1,995)
Cash flows from financing activities:
Purchase of treasury stock	(4,861)	(16,742)
Proceeds from exercise of stock-based awards	2,437	2,249
Net cash used in financing activities	(2,424)	(14,493)
Effect of exchange rate changes on cash and cash equivalents	(29)	(121)
Decrease in cash and cash equivalents	(7,409)	(12,527)
Cash and cash equivalents at the beginning of the period	22,260	21,739
Cash and cash equivalents at the end of the period	14,851	9,212
Supplemental information of cash-flow activities:
Income and withholding taxes	3,845	3,716
Non-cash transactions:
Cumulative effect of adoption of new accounting standard		8,555
Property and equipment purchases incurred but unpaid at period end		54
Intangible assets purchases incurred but unpaid at period end		750
Right-of-use assets obtained in the exchange for operating lease liabilities	$ 1,881