Note N - Segment Information - Reconciliation of Segment Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income from operations	$ 5,009		$ 1,414		$ 10,953	$ 2,039
Unallocated corporate, general and administrative expenses	(1,648)		(628)		(2,897)	(1,728)
Equity-based compensation expenses	(2,677)	$ (2,677)	(2,433)	$ (2,433)	(8,212)	(6,546)
Intangible assets amortization expenses	(349)		(427)		(1,197)	(636)
Amortization of employee retention expenses related to the acquisition of SoundChip	(34)		(250)		(534)	(250)
Financial income, net	216		343		951	1,535
Total consolidated income (loss) before taxes	$ 517		$ (1,981)		$ (936)	$ (5,586)