Note 9 - Loss Per Share - Shares Excluded from the Diluted EPS Calculation (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Share-based Payment Arrangement, Option [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	250	174	250	174
Restricted Stock [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	10	23	10	23
Common Shares Issuable for Debt Interest [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)		1		1
Convertible Debt Securities [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	61	659	61	659
Warrant [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	169	230	169	230