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Note D - Leases - Components of Lease Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating lease cost $ 1,456 $ 1,581
Amortization of right-of-use assets 40 46
Interest on lease liabilities 2 5
Total Finance lease cost 42 51
Variable lease cost 502 539
Sublease income (286) (251)
Total lease cost, net 1,714 1,920
Operating cash flows from operating leases 3,341 3,789
Operating cash flows from finance leases 2 4
Financing cash flows from finance leases $ 47 $ 55
Weighted Average Remaining Lease term, Operating leases (Year) 5 years 8 months 12 days 6 years 2 months 12 days
Weighted Average Remaining Lease term, Finance leases (Year) 1 year 2 months 12 days 2 years
Weighted Average Discount Rate, Operating leases 3.67% 3.41%
Weighted Average Discount Rate, Finance leases 5.87% 5.47%