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Note 2 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Noncurrent assets from discontinued operations |  | $ 1,025 | $ 1,275
Disposal Group, Including Discontinued Operation, Contingent Liabilities |  | 4,100 | 5,100
Transport Financial Services [Member] |  |  |
Discontinued Operation, Tax Effect of Discontinued Operation |  | 200 | 800
Transport Financial Services [Member] | Discontinued Operations, Disposed of by Sale [Member] |  |  |
Operating expenses |  | 0 | 25
(Reversal of) loss contingency | $ (3,400) | (1,000) | (3,412)
Operating income |  | 1,000 | 3,387
Income before income taxes |  | 1,000 | 3,387
Discontinued Operation, Tax Effect of Discontinued Operation |  | 250 | 847
Net income from discontinued operations, net of tax |  | 750 | 2,540
Noncurrent deferred tax asset |  | 1,025 | 1,275
Noncurrent assets from discontinued operations |  | 1,025 | 1,275
Total assets from discontinued operations |  | 1,025 | 1,275
Accounts payable |  | 0 | 0
Current liabilities of discontinued operations |  | 0 | 0
Total liabilities from discontinued operations |  | $ 4,100 | $ 5,100

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