Note M - Segment Information - Reconciliation of Segment Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income from operations	$ 4,617	$ 2,131	$ 6,214	$ 7,717
Unallocated corporate, general and administrative expenses, net	9	(486)	(941)	(1,627)
Equity-based compensation expenses	(1,461)	(1,261)	(3,705)	(3,925)
Intangible assets amortization expenses	(390)	(321)	(1,032)	(963)
Other income	2,549		2,549
Financial income, net	344	245	910	871
Total consolidated income before taxes	$ 5,668	$ 308	$ 3,995	$ 2,073