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Note 7 - Leases - Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Operating lease $ 53,709 $ 45,987
Operating lease accumulated amortization (18,381) (17,763)
Operating lease right-of-use asset, net 35,328 28,224
Current portion of lease liabilities 6,921 6,098
Operating lease liabilities 29,013 22,655
Total operating lease liabilities 35,934 28,753
Property and equipment, at cost 455,975 429,810
Accumulated depreciation (283,315) (281,478)
Finance lease, net 3,172 1,559
Finance lease current liabilities 922 594
Finance lease liabilities 2,334 1,025
Total finance lease liabilities $ 3,256 $ 1,619
Operating leases (in years) (Year) 7 years 6 years
Finance leases (in years) (Year) 4 years 3 years
Operating leases 3.91% 3.41%
Finance leases 4.80% 3.56%
Assets Held Under Finance Leases [Member]    
Property and equipment, at cost $ 4,957 $ 3,144
Accumulated depreciation $ (1,785) $ (1,585)