Note 10 - Variable Interest Entities - Revenue and Expenses of Delphax Included in the Company's Consolidated Statements of Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Revenues	$ 35,769,170	$ 46,618,573	$ 104,785,413	$ 113,631,022
General and administrative	4,960,263	4,585,364	15,932,655	12,050,479
Research and development	107,598	216,000	858,480	216,000
Depreciation, amortization and impairment	411,798	296,474	2,755,071	667,595
	34,129,753	42,728,456	109,197,739	105,285,354
Operating loss	1,639,417	3,890,117	(4,412,326)	8,345,668
Non-operating loss	174,875	55,083	(679,948)	25,452
Loss before income taxes	1,814,292	3,945,200	(5,092,274)	8,371,120
Income Tax Expense (Benefit)	149,000	1,499,000	152,000	2,867,000
Net loss	$ 1,665,292	$ 2,446,200	(5,244,274)	$ 5,504,120
Delphax [Member]
Revenues			7,648,724
Cost of sales			8,671,905
General and administrative			2,295,255
Research and development			858,480
Depreciation, amortization and impairment			1,713,322
			13,538,962
Operating loss			(5,890,238)
Non-operating loss			103,966
Loss before income taxes			(5,786,272)
Income Tax Expense (Benefit)
Net loss			$ (5,786,272)