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Note 8 - Sale of Development Project (Details Textual)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 08, 2013
USD ($)
Aug. 31, 2015
USD ($)
Apr. 30, 2013
USD ($)
Oct. 31, 2015
USD ($)
Nov. 01, 2014
USD ($)
Oct. 31, 2015
USD ($)
Nov. 01, 2014
USD ($)
Jan. 31, 2015
USD ($)
MoCal [Member] | Closing Consideration [Member]                
Revenue Recognition, Milestone Method, Revenue Recognized $ 2,000,000              
MoCal [Member] | Payroll Expense Reimbursement [Member]                
Revenue Recognition, Milestone Method, Revenue Recognized 600,000              
MoCal [Member]                
Assets 600,000              
Additional After Timely First Milestone [Member]                
Revenue Recognition, Milestone Method, Revenue Recognized $ 5,000,000              
The Buyer Vs. the Entity [Member] | Litigation Award, Not Including Legal Costs, Interest, and Other Associated Expenses [Member]                
Litigation Settlement, Amount   $ 5,000,000            
The Buyer Vs. the Entity [Member] | Litigation Award, Amount to Recover Legal Costs, Interest, and Other Associated Expenses [Member]                
Litigation Settlement, Amount   2,600,000            
The Buyer Vs. the Entity [Member]                
Litigation Settlement, Amount   $ 7,600,000            
Number of Employees Transferred 21              
Assets       $ 221,835,000   $ 221,835,000   $ 205,333,000
Gain (Loss) on Sale of Project     $ 1,100,000 $ 7,551,000 $ 7,551,000  
Connectivity Assets Legal Fees and Bank Services     400,000          
Proceeds from Payroll Transfer     $ 600,000