Note H - Commitments and Contingencies - Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Amortization of right-of-use assets	$ 123
Interest on lease liabilities	40
Total finance lease cost	163
Operating lease cost	473
Short-term lease cost	232
Variable lease cost	48
Less: sublease income	(84)
Total lease costs	$ 832