Note 11 - Variable Interest Entities (Details Textual) - USD ($)	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Interest Expense, Total	$ 3,427,102	$ 1,724,771
Investments in Funds, Noncurrent	$ 463,892	$ 324,854
Delphax [Member]
Percentage of Consolidated Subsidiaries Dividends Attributable to Parent	67.00%
Percentage of Consolidated Subsidiaries Dividends Attributable to Noncontrolling Interests	33.00%
Net Income (Loss) Attributable to Noncontrolling Interest, Percentage	33.00%	33.00%
Delphax [Member] \| Senior Subordinated Note [Member]
Short-term Debt, Total	$ 550,000	$ 900,000
Delphax [Member] \| Senior Subordinated Note [Member] \| Short-term Debt [Member]
Interest Payable, Current	1,200,000	888,000
Delphax [Member] \| Delphax Senior Credit Agreement [Member]
Short-term Debt, Total	0
Investment Funds Purchased from Blue Clay Capital Management, LLC [Member]
Investments in Funds, Noncurrent	464,000
Investment Funds Purchased from Blue Clay Capital Management, LLC [Member] \| Senior Subordinated Note and Delphax Senior Debt Credit Agreement [Member]
Interest Expense, Total	$ 311,000	$ 670,000

Amount of investments held in funds for the long-term.

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The percentage of net income (loss) attributable to non-controlling interest.

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Represents the percentage of dividends paid by consolidated subsidiaries that attributable to noncontrolling interest.

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Represents the percentage of dividends paid by consolidated subsidiaries that are attributable to parent.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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