Note 11 - Variable Interest Entities - Carrying Values of Assets and Liabilities of Delphax Included on the Company's Consolidated Balance Sheet (Details) - USD ($)	Mar. 31, 2019	Mar. 31, 2018
Cash and cash equivalents	$ 12,524,321	$ 4,803,238
Accounts receivable, net	19,077,248	15,157,855
Total current assets	71,348,113	61,671,108
Total assets	115,142,137	97,146,886
Accounts payable	12,552,724	10,181,143
Income tax payable	661,690	23,000
Total current liabilities	52,794,010	31,177,806
Total liabilities	86,308,373	70,910,863
Delphax [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents	12,315	241,430
Accounts receivable, net	46,844	316,542
Other current assets	58,441	72,269
Total current assets	117,600	630,241
Other tax receivables-long-term	311,000	311,000
Total assets	428,600	941,241
Accounts payable	2,151,235	2,145,847
Income tax payable		11,312
Accrued expenses	3,157,707	3,244,514
Short-term Debt, Total	1,749,779	1,788,285
Total current liabilities	7,058,721	7,189,958
Total liabilities	7,058,721	7,189,958
Net assets	$ (6,630,121)	$ (6,248,717)