Note D - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Right-of-use Assets, operating leases	$ 19,179	$ 17,679
Right-of-use Assets, finance leases	1,071	1,138
Right-of-use Assets, total	20,250	18,817
Short-term lease liabilities, operating leases	8,197	7,226
Short-term lease liabilities, finance leases	334	390
Short-term lease liabilities, total	8,531	7,616
Long-term lease liabilities, operating leases	13,375	12,514
Long-term lease liabilities, finance leases	511	564
Long-term lease liabilities, total	13,886	13,078
Total Lease Liabilities, operating leases	21,572	21,730
Total Lease Liabilities, finance leases	845	896
Total Lease Liabilities, total	$ 22,417	$ 20,694