Note D - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Operating Lease, Right-of-Use Asset	$ 17,500	$ 18,600
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	500	600
Right-of-use Assets, total	18,011	19,169
Current portion of lease liabilities, operating leases	5,810
Current portion of lease liabilities, finance leases	93
Current portion of lease liabilities, total	5,903	5,747
Long-term lease liabilities, total	14,631	16,575
Total Lease Liabilities, finance leases	122
Right of Use Assets [Member]
Operating Lease, Right-of-Use Asset	17,491	18,574
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	520	595
Short-term Lease Liabilities [Member]
Current portion of lease liabilities, operating leases		5,587
Current portion of lease liabilities, finance leases		160
Current portion of lease liabilities, total		5,747
Long-term Lease Liabilities [Member]
Long-term lease liabilities, operating leases	14,602	16,523
Long-term lease liabilities, finance leases	29	52
Long-term lease liabilities, total	14,631	16,575
Short-term Lease Liabilities and Long-term Lease Liabilities [Member]
Total Lease Liabilities, operating leases	20,412	22,110
Total Lease Liabilities, finance leases	122	212
Total Lease Liabilities, total	$ 20,534	$ 22,322