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Note 15 - Income Taxes - Summary of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accrued employee benefits | $ 3,125 | $ 3,525
Inventories | 30 | 73
Trade receivable, net | 833 | 958
Net operating loss carryforwards | 3,099 | 3,231
Tax credit carryforwards | 2,888 | 2,699
Contract assets, net | 313 | 0
Other | 984 | 389
Deferred tax assets, gross | 11,272 | 10,875
Valuation allowance | (5,899) | (6,228)
Deferred tax assets, net | 5,373 | 4,647
Contract assets, net | 0 | (1,366)
Property and equipment | (12,937) | (12,029)
Intangible assets | (1,902) | (2,737)
Goodwill | (129) | 0
Prepaid expenses | (1,005) | (889)
Total deferred tax liabilities | (15,973) | (17,021)
Net deferred income tax liabilities | (10,600) | (12,374)
Deferred income taxes | (10,984) | (12,481)
Net deferred income tax liabilities | (10,600) | (12,374)
Other Assets [Member] |  |
Deferred income tax assets, included in Other assets | $ 384 | $ 107

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