Note 8 - Loss Per Share (Tables)

3 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended
(In thousands )	June 30, 2018		June 24, 2017
(in thousands):
Common shares issuable upon exercise of stock options		1,498		1,104
Restricted stock awards		262		350
Issuable shares for interest on loan		25		60
Common shares issuable upon conversion of convertible preferred stock		7,113		1,853
Common shares issuable upon exercise of warrants		3,960		3,737