Note D - Leases - Maturities of Finance and Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Remainder of 2020, operating leases	$ 7,633
Remainder of 2020, finance leases	346
2021, operating leases	5,303
2021, finance leases	227
2022, operating leases	3,771
2022, finance leases	190
2023, operating leases	2,865
2023, finance leases	88
2024, operating leases	562
2024, finance leases	12
2025, operating leases
2025, finance leases
Total future minimum lease payments, operating leases	20,134
Total future minimum lease payments, finance leases	863
Less: Imputed interest, operating leases	1,431
Less: Imputed interest, finance leases	67
Total lease liabilities, operating leases	18,703	$ 19,740
Total lease liabilities, finance leases	$ 796	$ 954