Note 13 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Jan. 04, 2018	Jan. 03, 2018	Nov. 26, 2017	Nov. 27, 2016	Nov. 26, 2017	Nov. 27, 2016
Common Stock, Dividends, Per Share, Declared			$ 0.10	$ 0.10	$ 0.30	$ 0.30
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared	$ 3
Subsequent Event [Member] | HSBC Bank USA [Member]
Repayments of Long-term Lines of Credit, Including Principal and Accrued Interest		$ 68,779