Note 13 - Variable Interest Entities - Carrying Values of Assets and Liabilities of Delphax Included on the Company's Consolidated Balance Sheet (Details) - USD ($)		Sep. 30, 2018	Mar. 31, 2018
Cash and cash equivalents	[1]	$ 5,612,472	$ 4,803,238
Accounts receivable, net	[1]	18,634,629	15,157,855
Other current assets		3,393,812	658,630
Total current assets		64,543,095	61,671,108
Total assets		117,713,811	97,146,886
Accounts payable	[1]	14,730,946	10,181,143
Income tax payable	[1]	34,312	23,000
Accrued expenses	[1]	13,769,010	11,743,973
Total current liabilities		43,776,794	31,177,806
Total liabilities		89,364,504	70,910,863
Delphax [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		314,481	241,430
Accounts receivable, net		40,844	316,542
Other current assets		58,754	72,269
Total current assets		414,079	630,241
Other tax receivables-long-term		311,000	311,000
Total assets		725,079	941,241
Accounts payable		2,146,938	2,145,847
Income tax payable		11,312	11,312
Accrued expenses		3,234,808	3,244,514
Short-term Debt, Total		1,772,660	1,788,285
Total current liabilities		7,165,718	7,189,958
Total liabilities		7,165,718	7,189,958
Net Assets		$ (6,440,639)	$ (6,248,717)

[1] Amounts related to Delphax as of September 30, 2018 and March 31, 2018, respectively.