Note 9 - Variable Interest Entities - Carrying Values of Assets and Liabilities of Delphax Included on the Company's Consolidated Balance Sheet (Details) - USD ($)	Jun. 30, 2017	Mar. 31, 2017		Jun. 30, 2016	Mar. 31, 2016
Cash and cash equivalents	$ 1,888,824	$ 2,763,365	[1]	$ 3,969,976	$ 5,345,455
Accounts receivable, net	20,795,360	18,923,787	[1]
Inventories	25,352,376	19,778,843	[1]
Other current assets	1,432,000	1,672,475	[1]
Total current assets	53,874,000	48,859,078	[1]
Property and equipment	5,359,386	5,324,488	[1]
Total assets	69,728,069	65,335,189	[1]
Accounts payable	10,828,717	11,571,156	[1]
Accrued expenses	8,820,775	8,672,815	[1]
Short-term Debt	2,225,000	25,000	[1]
Total current liabilities	21,874,492	20,268,971	[1]
Long-term debt	20,863,922	18,412,521	[1]
Other long-term liabilities	2,085,801	3,039,402	[1]
Total liabilities	44,852,102	41,728,894	[1]
Delphax [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents	312,016	328,327
Accounts receivable, net	2,593,290	2,036,221
Inventories	1,563,494	1,941,729
Other current assets	831,321	1,145,274
Total current assets	5,300,121	5,451,551
Property and equipment	3,316	8,007
Total assets	5,303,437	5,459,558
Accounts payable	2,398,194	2,482,578
Income tax payable	11,312	11,312
Accrued expenses	3,581,391	3,627,162
Short-term Debt	4,523,625	4,714,257
Total current liabilities	10,514,522	10,835,309
Long-term debt
Other long-term liabilities
Total liabilities	10,514,522	10,835,309
Net Assets	$ (5,211,085)	$ (5,375,751)

[1] Derived from audited consolidated financial statements