Note 10 - Variable Interest Entities - Carrying Values of Assets and Liabilities of Delphax Included on the Company's Consolidated Balance Sheet (Details) - USD ($)	Dec. 31, 2016	Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2015
Cash and cash equivalents	$ 1,621,890	$ 5,345,455	[1]	$ 5,287,316	$ 14,165,120
Accounts receivable, net	15,239,948	12,303,128
Inventories	20,946,720	12,274,104
Other current assets	1,192,275	1,668,004
Total current assets	45,990,430	38,959,534
Property and equipment	5,168,905	4,577,774
Goodwill	4,185,265	275,408
Other assets	402,439	317,528
Total assets	62,028,049	52,154,752
Accounts payable	9,054,684	7,003,660
Income tax payable		11,312
Accrued expenses	6,706,927	6,842,874
Short-term debt	1,163,577	1,859,300
Total current liabilities	16,925,188	15,717,146
Long-term debt	18,358,742	4,835
Other long-term liabilities	2,992,435	615,241
Total liabilities	38,822,365	16,883,222
Delphax [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents	95,357	249,528
Accounts receivable, net	2,000,183	1,433,494
Inventories	2,014,783	4,642,298
Other current assets	491,331	1,034,067
Total current assets	4,601,654	7,359,387
Property and equipment	33,474	625,684
Intangible assets		1,109,112
Goodwill		275,408
Other assets		26,020
Total assets	4,635,128	9,395,611
Accounts payable	2,577,816	1,684,802
Income tax payable	11,312	11,312
Accrued expenses	3,562,787	1,926,340
Short-term debt	1,163,577	1,859,300
Total current liabilities	7,315,492	5,481,754
Long-term debt	2,748,471	2,581,107
Other long-term liabilities		606,358
Total liabilities	10,063,963	8,669,219
Net assets	$ (5,428,835)	$ 726,392

[1] Derived from audited consolidated financial statements.