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Note 8 - Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
United States | $ 37,248 | $ 31,246 | $ 45,166
Current expense: |  |  |
Federal | 5,174 | 4,058 | 8,204
Foreign | 1,087 | 353 | 1,140
State and local | 1,086 | 1,103 | 1,205
Total current | 7,347 | 5,514 | 10,549
Deferred expense (benefit): |  |  |
Federal | 60 | 728 | (720)
Foreign | 48 | (349) | (379)
State and local | (58) | 165 | (99)
Total deferred | 50 | 544 | (1,198)
Income tax expense | 7,397 | 6,058 | 9,351
UNITED STATES |  |  |
United States | 30,973 | 28,493 | 41,234
Foreign Countries [Member] |  |  |
United States | $ 6,275 | $ 2,753 | $ 3,932

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