Note 4 - Balance Sheet Details (Details) - Other Current Liabilities - USD ($) $ in Thousands	Sep. 27, 2015	Mar. 29, 2015
Other Current Liabilities [Abstract]
Short-term lease financing obligations	$ 3,796	$ 3,834
Accrued retention bonus	3,176	2,951
Provision for dispute	2,500
Purchase consideration holdback	1,006	1,006
Accrued manufacturing expenses, royalties and licenses	720	1,122
Accrued legal and professional services	676	982
Accrued sales and marketing expenses	629	686
Accrued restructuring charges and exit costs	169	982
Deferred tax liability		7,021
Other current liabilities	2,634	2,703
Total other current liabilities	$ 15,306	$ 21,287