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Note 9 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Federal                         $ 13,292 $ 15,474 $ 14,673
State                         2,059 908 772
Total current income tax expense                         15,351 16,382 15,445
Federal                         3,318 (5,398) (746)
State                         2,176 (2,082) (2,872)
Total deferred income tax expense (benefit)                         5,494 (7,480) (3,618)
Change in valuation allowance                         (93) (28) (2,234)
Total income tax expense $ 7,525 $ 6,902 $ 864 $ 5,461 $ 2,685 $ 1,591 $ 2,348 $ 2,250 $ 2,941 $ 3,783 $ 1,030 $ 1,839 $ 20,752 $ 8,874 $ 9,593