Note J - Pension Liability - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Components of net periodic benefit cost:
Service cost and amortization of loss	$ 12	$ 13
Interest cost	8	7
Net periodic benefit cost	$ 20	$ 20