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Note 13 - Related Party Matters (Details Textual)
9 Months Ended
Dec. 27, 2017
shares
Dec. 15, 2017
USD ($)
Dec. 31, 2017
USD ($)
a
Jul. 18, 2016
ft²
Chief Investment Officer [Member]        
Annual Salary After the Acquisition   $ 50,000    
Blue Clay Capital Management, LLC [Member]        
Business Combination, Consideration Transferred   $ 1    
Company Controlled by Company's Officer and Directors [Member] | Little Mountain Airport [Member]        
Area of Real Estate Property | a     68  
Operating Leases Monthly Rent     $ 14,862  
Contrail Aviation Support, Inc. [Member] | Contrail Aviation Support LLC. [Member]        
Area of Real Estate Property | ft²       21,000
Operating Lease, Payments     $ 118,906  
Lessee, Operating Lease, Renewal Term     5 years  
Blue Clay Capital Management, LLC [Member]        
Related Party Transaction, Stock Issued During Period | shares 52,000