Note 4 - Inventories - Components of Inventories (Details) - USD ($) $ in Thousands  | 
Oct. 01, 2017  | 
Apr. 02, 2017  | 
|---|---|---|
| Raw Materials | $ 1,138 | $ 42 | 
| Finished Goods | 15,633 | 15,779 | 
| Total inventory | $ 16,771 | $ 15,821 | 
| X | ||||||||||
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  |