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Note 1 - The Company (Details Textual)
9 Months Ended
Sep. 01, 2015
USD ($)
$ / shares
shares
Sep. 30, 2016
ft²
shares
Mar. 31, 2016
Apr. 24, 2015
Dec. 30, 2013
The Corporation [Member] | Holders of Dividend Notes [Member] | Common Stock [Member]          
Conversion of Stock, Shares Issued 0.024798        
The Corporation [Member] | Holders of Dividend Notes [Member]          
Percentage of Shares to be Allocated from Merger 30.00%     30.00%  
Stock Issued During Period, Shares, New Issues 444,804        
Conversion of Stock, Shares Issued 0.024798        
Per Dollar of Principal, Amount of the Dividend Notes Issued | $ / shares $ 1        
The Corporation [Member] | Common Stock [Member]          
Conversion of Stock, Shares Issued 0.0904        
The Corporation [Member]          
Common Stock, Shares, Outstanding 1,482,680        
Percentage of Shares to be Allocated from Merger 22.60%     22.60%  
Stock Issued During Period, Shares, New Issues 335,086        
Maximum Value of Asset to Effect Dissolution | $ $ 1,000,000        
GSD [Member] | Holders of Common Shares of GSD [Member] | Common Stock [Member]          
Conversion of Stock, Shares Issued 0.473999        
GSD [Member] | Holders of Common Shares of GSD [Member]          
Percentage of Shares to be Allocated from Merger 47.40%        
Stock Issued During Period, Shares, New Issues 702,790        
Conversion of Stock, Shares Issued 0.473999        
Holders of Dividend Notes [Member]          
Percentage of Shares to be Allocated from Merger     29.20%    
Holders of Common Shares of GSD [Member]          
Percentage of Shares to be Allocated from Merger     55.60%    
Gyrodyne Special Distribution LLC [Member]          
Percentage of Real Estate Owned         100.00%
Number of Real Estate Properties   4      
The Grove Property [Member]          
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest   10.12%      
Remaining Medical Park [Member] | Controlled by Parent Company [Member]          
Number of Units in Real Estate Property   1      
Second Medical Park [Member] | Controlled by Parent Company [Member]          
Number of Units in Real Estate Property   4      
Second Medical Park [Member]          
Number of Units in Real Estate Property   14      
Second Medical Park and Remaining Medical Park [Member] | Controlled by Parent Company [Member]          
Area of Real Estate Property | ft²   49,000      
Multi-Tenant Industrial Park [Member] | Controlled by Parent Company [Member]          
Area of Real Estate Property | ft²   130,000      
St. James, New York [Member] | Controlled by Parent Company [Member]          
Area of Real Estate Property | ft²   68      
Medical Office Park [Member] | Controlled by Parent Company [Member]          
Number of Units in Real Estate Property   4      
Common Stock, Shares, Outstanding   1,482,680      
Number of Operating Segments   1      
Minimum Percentage of Taxable Income Distributed to Shareholders to Maintain REIT Status   90.00%