INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 7,899	$ 3,963
Adjustments required to reconcile net income to net cash provided by operating activities:
Depreciation	998	784
Amortization of intangible assets	927	974
Equity-based compensation	4,648	2,795
Realized loss, net on sale of available-for-sale marketable securities	16	74
Amortization of premiums on available-for-sale marketable securities	757	841
Unrealized foreign exchange (gain) loss	(29)	213
Changes in operating assets and liabilities:
Trade receivables	(13,172)	(790)
Prepaid expenses and other assets	(1,403)	29
Accrued interest on bank deposits	(395)	(42)
Deferred tax, net	(571)	(712)
Trade payables	370	21
Deferred revenues	1,269	364
Accrued expenses and other payables	(62)	(169)
Accretion of contingent consideration		97
Accrued payroll and related benefits	(356)	(413)
Income taxes payable	894	(277)
Excess tax benefit from equity-based compensation		(112)
Accrued severance pay, net	176	172
Net cash provided by operating activities	1,966	7,812
Cash flows from investing activities:
Purchase of property and equipment	(2,031)	(1,173)
Investment in bank deposits	(19,100)	(46,328)
Proceeds from bank deposits	25,613	47,451
Investment in available-for-sale marketable securities	(32,498)	(26,195)
Proceeds from maturity of available-for-sale marketable securities	7,316	3,989
Proceeds from sale of available-for-sale marketable securities	14,253	20,883
Proceeds from realization of investment in other company		111
Net cash used in investing activities	(6,447)	(1,262)
Cash flows from financing activities:
Payment of contingent consideration (see note 3)		(3,700)
Purchase of treasury stock	(3,417)	(8,156)
Proceeds from exercise of stock-based awards	8,998	5,382
Excess tax benefit from equity-based compensation		112
Net cash provided by (used in) financing activities	5,581	(6,362)
Effect of exchange rate changes on cash and cash equivalents	(11)	(38)
Decrease in cash and cash equivalents	1,089	150
Cash and cash equivalents at the beginning of the period	18,909	16,166
Cash and cash equivalents at the end of the period	19,998	16,316
Supplemental information of cash-flow activities:
Income and withholding taxes, net of refunds	1,604	$ 1,693
Property and equipment purchases incurred but unpaid at period end	$ 67