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Note 14 - Subsequent Events (Details Textual)
Feb. 08, 2016
USD ($)
a
Dec. 22, 2016
USD ($)
Sep. 01, 2016
USD ($)
Jun. 01, 2016
USD ($)
Mar. 04, 2016
Feb. 25, 2016
USD ($)
Dec. 31, 2015
a
Nov. 30, 2015
USD ($)
Fenner Valley Farms LLC [Member] | Subsequent Event [Member]                
Lessor Leasing Arrangements, Operating Leases, Term of Contract 99 years              
Area of Land | a 2,100              
Proceeds from Leases Held-for-investment $ 12,000,000              
Additional Acres Available for Lease Maximum 7,500              
Additional Acres Available for Lease Tranche 1       $ 2,093        
Additional Acres Available for Lease Value Tranche 1       $ 12,000,000        
Additional Acres Available for Lease Tranche 2     $ 2,093          
Additional Acres Available for Leases Value Tranche 2     $ 12,000,000          
Additional Acres Available for Lease Tranche 3   $ 3,314            
Additional Acres Available for Leases Value Tranche 3   $ 19,000,000            
Subsequent Event [Member] | Senior Secured Debt [Member]                
Repayments of Senior Debt $ 10,500,000              
Percentage of Future Quarterly Interest Payments 50.00%              
Debt Instrument, Fee Amount           $ 2,250,000    
Debt Instrument, Interest Rate, Stated Percentage         8.00%      
Senior Secured Debt [Member]                
Debt Instrument, Fee Amount               $ 2,250,000
Area of Land | a             45,000  
Percentage of Future Quarterly Interest Payments             50.00%