Note 9 - Revenue and Expenses of Delphax Included in the Company's Consolidated Statements of Operations (Unaudited) (Details)	9 Months Ended
	Dec. 31, 2015 USD ($)
Delphax [Member]
Operating Revenues	$ 1,035,000
Cost of sales	1,376,000
General and administrative	309,000
Research and development	216,000
Depreciation and amortization	17,000
	1,918,000
Operating Loss	(883,000)
Non-operating Income	36,000
Loss Before Income Taxes	$ (847,000)
Income Tax Expense (Benefit)
Net income	$ (847,000)
Operating Revenues	113,631,022
General and administrative	12,050,479
Research and development	216,000
Depreciation and amortization	667,595
	105,285,354
Operating Loss	8,345,668
Non-operating Income	25,452
Loss Before Income Taxes	8,371,120
Income Tax Expense (Benefit)	2,867,000
Net income	$ 5,504,120