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Note 13 - Lease Financing Obligations (Details Textual)
1 Months Ended 3 Months Ended
May 30, 2016
USD ($)
a
ft²
Jan. 31, 2015
USD ($)
Oct. 31, 2014
USD ($)
Jul. 31, 2012
USD ($)
Jul. 03, 2016
USD ($)
Jun. 28, 2015
USD ($)
Mar. 27, 2016
Property, Plant and Equipment, Net [Member] | January Two Thousand Fifteen Two-Year And Two Three-Year License [Member]              
Capital Lease Obligations Incurred   $ 6,900,000          
Property, Plant and Equipment, Net [Member] | October 2014 Three-Year License [Member]              
Capital Lease Obligations Incurred     $ 4,400,000        
Property, Plant and Equipment, Net [Member] | July 2012 Three-Year License [Member]              
Capital Lease Obligations Incurred       $ 900,000      
January Two Thousand Fifteen Two-Year And Two Three-Year License [Member]              
Repayments of Long-term Capital Lease Obligations   $ 1,000,000          
October 2014 Three-Year License [Member]              
Repayments of Long-term Capital Lease Obligations     $ 1,500,000        
Capital Lease Obligations [Member] | Minimum [Member]              
Debt Instrument, Interest Rate, Effective Percentage             2.00%
Capital Lease Obligations [Member] | Maximum [Member]              
Debt Instrument, Interest Rate, Effective Percentage             7.25%
Design Tool Impairment [Member]              
Restructuring Costs         $ 400,000    
Fremont Campus [Member] | Portion of Building Located at 48720 Kato Road [Member]              
Sale Leaseback Transaction, Monthly Rental Payments $ 86,338            
Fremont Campus [Member] | Portion of Building Located at 48710 Kato Road [Member]              
Sale Leaseback Transaction, Monthly Rental Payments $ 600            
Fremont Campus [Member]              
Sale of Land and Building, Selling Price         24,100,000    
Area of Real Estate Property | ft² 151,000            
Area of Land | a 4.5            
Sale Leaseback Transaction, Gain on Sale, Gross $ 11,900,000            
Sale Leaseback Transaction, Deferred Gain, Net $ 2,600,000            
Repayments of Long-term Capital Lease Obligations         453,000 $ 459,000  
Asset Impairment Charges         1,519,000  
Sale Leaseback Transaction, Amortization of Deferred Gain         $ 200,000