Note 6 - Other Long-term Liabilities (Details) - USD ($)	Jan. 30, 2016	Jan. 31, 2015
License Fees [Member]
Other long-term liabilities	$ 3,000,000	$ 1,809,000
Deferred Rent Obligations [Member]
Other long-term liabilities	$ 964,000	79,000
Design Tool Licences [Member]
Other long-term liabilities		890,000
Other Long-term Liabilities [Member]
Other long-term liabilities	$ 59,000	44,000
Other long-term liabilities	$ 4,023,000	$ 2,822,000