Note K - Pension Liability - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Components of net periodic benefit cost:
Service cost and amortization of loss	$ 15	$ 18
Interest cost	11	12
Net periodic benefit cost	$ 26	$ 30