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Note 11 - Income Taxes - Provisions for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Federal $ 3,732 $ 2,282 $ 3,666
State 715 510 627
Foreign 1,299 849 658
Total current tax expense 5,746 3,641 4,951
Federal (1,589) (126) (189)
State (216) (32) (138)
Foreign (678) (370) (238)
Total deferred tax expense (2,483) (528) (565)
Total income tax expense $ 3,263 $ 3,113 $ 4,386