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Note 8 - Income Taxes (Details Textual) - USD ($)
12 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions $ 134,000 $ 195,000
Unrecognized Tax Benefits, Gross   773,000
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions   573,000
Unrecognized Tax Benefits   200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 65,000 $ 11,000
Effective Income Tax Rate Reconciliation, Percent 36.70% 36.40%