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Note 15 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current: |  |  |
Federal | $ 41,686 | $ 32,072 | $ 15,753
State | 4,211 | 9,639 | 1,775
Foreign | 2,660 | 4,546 | 4,585
Current | 48,557 | 46,257 | 22,113
Deferred: |  |  |
Federal | 19,393 | 22,225 | 18,213
State | 1,390 | 1,910 | 4,139
Foreign | (1,263) | 479 | (2,777)
Deferred | 19,520 | 24,614 | 19,575
Change in valuation allowance | (778) | (1,015) | 2,454
Provision for income taxes | $ 67,299 | $ 69,856 | $ 44,142

X
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