Note 9 - Variable Interest Entities - Revenue and Expenses of Delphax Included in the Company's Consolidated Statements of Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Revenues	$ 44,501,246	$ 35,769,170	$ 141,060,109	$ 104,785,413
General and administrative	7,252,381	4,960,263	21,114,626	15,932,655
Research and development		107,598	195,653	858,480
Depreciation, amortization and impairment	815,590	411,798	1,743,955	2,755,071
	43,949,566	34,129,753	137,820,203	109,197,739
Operating Income (Loss)	551,680	1,639,417	3,239,906	(4,412,326)
Non-operating Income (Expense), net	(1,326,121)	174,875	(1,651,000)	(679,948)
Income (Loss) Before Income Taxes	(774,441)	1,814,292	1,588,906	(5,092,274)
Income Tax Expense (Benefit)	(60,000)	149,000	595,000	152,000
Net Income (Loss)	$ (714,441)	$ 1,665,292	993,906	(5,244,274)
Delphax [Member]
Revenues			5,324,763	7,648,724
Cost of sales			2,860,159	8,671,905
General and administrative			1,213,885	2,295,255
Research and development			195,653	858,480
Depreciation, amortization and impairment			8,007	1,713,322
			4,277,704	13,538,962
Operating Income (Loss)			1,047,059	(5,890,238)
Non-operating Income (Expense), net			(540,076)	103,966
Income (Loss) Before Income Taxes			506,983	(5,786,272)
Income Tax Expense (Benefit)
Net Income (Loss)			$ 506,983	$ (5,786,272)