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Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Deferred income tax (assets) liabilities: |  |
Inventory | $ (4,710) | $ (2,704)
Accounts receivable | (430) | (349)
Finance lease obligations | (28,514) | (27,242)
Finance and operating leases | (25,283) | (16,379)
Stock options | (7,525) | (6,993)
Accrued liabilities | (3,632) | (5,768)
State net operating loss carry forward | (1,268) | (1,438)
State tax credit | (77) | (120)
Other | (5,519) | (2,765)
Difference between book and tax basis- Operating lease assets | 24,989 | 16,132
Difference between book and tax basis- Depreciation and amortization | 203,939 | 188,099
Net deferred income tax liability | $ 151,970 | $ 140,473

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