Note 1 - Summary of Significant Accounting Policies (As Restated) (Details Textual) - USD ($)	3 Months Ended	4 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2015	Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2016		Mar. 31, 2016		Mar. 31, 2015	Nov. 24, 2015
Accounts Receivable Payment Terms					30 days
Goodwill, Gross		$ 375,000			$ 375,000		$ 375,000
Goodwill, Impairment Loss					100,000
Impairment of Intangible Assets, Finite-lived					$ 50,000
Warranty Term on Ground Equipment Products					3 years
Research and Development Expense		778,000			$ 777,942	[1]			$ 0
Stockholders' Equity Attributable to Noncontrolling Interest		1,040,922	[2]		1,040,922	[2]	$ 1,040,922	[2]
Net Income (Loss) Attributable to Noncontrolling Interest					$ (655,953)	[1]
Delphax [Member]
Percentage of Consolidated Subsidiaries Dividends Attributable to Parent					67.00%
Percentage of Consolidated Subsidiaries Dividends Attributable to Noncontrolling Interests					33.00%
Net Income (Loss) Attributable to Noncontrolling Interest, Percentage	33.00%			33.00%	33.00%		33.00%
Stockholders' Equity Attributable to Noncontrolling Interest		$ 0			$ 0		$ 0
Net Income (Loss) Attributable to Noncontrolling Interest					$ 0
Equipment Leased to Other Party [Member]
Property, Plant and Equipment, Useful Life					10 years
Delphax [Member]
Asset Retirement Obligation										$ 560,000
Delphax [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life					3 years
Delphax [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life					7 years
Overnight Air Cargo [Member]
Number of Major Customers					1
Cargo and Freight Revenue					$ 24,632,000				$ 32,672,000

[1] The Consolidated Statement of Comprehensive Income for the year ended March 31, 2016 has been restated. See Note 1A.

[2] The Consolidated Balance Sheet as of March 31, 2016 has been restated. See Note 1A.