Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities (USD $)	9 Months Ended	12 Months Ended
	Dec. 29, 2013	Mar. 31, 2013
Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities [Line Items]
Fair value of earn-out liability – short-term	$ 2,230,000	$ 2,599,000
Accrued restructuring charges and exit costs	1,957,000	2,020,000
Short-term lease financing obligations	1,700,000	3,189,000
Accrued manufacturing expenses, royalties and licenses	1,669,000	2,370,000
Accrued legal and professional services	866,000	746,000
Accrued sales and marketing expenses	573,000	576,000
Accrual for dispute resolution		2,727,000
Other	900,000	738,000
Total other current liabilities	11,151,000	15,215,000
Potential Indemnity Claims [Member]
Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities [Line Items]
Purchase consideration holdback	$ 1,256,000	$ 250,000