Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)		Jun. 30, 2017	Mar. 31, 2017
Cash and cash equivalents		$ 1,888,824	$ 2,763,365	[1]
Allowance for doubtful accounts		958,000	979,000	[2]
Accounts receivable		20,795,360	18,923,787	[1]
Notes and other receivables-current		1,487,884	2,297,007	[1]
Inventories, net		25,352,376	19,778,843	[1]
Prepayments and other		1,432,000	1,672,475	[1]
Property and equipment, net		5,359,386	5,324,488	[1]
Accounts payable		10,828,717	11,571,156	[1]
Accrued expenses and other current liabilities		$ 8,820,775	$ 8,672,815	[1]
Preferred stock, par value (in dollars per share)		$ 1	$ 1	[2]
Preferred stock, shares authorized (in shares)		50,000	50,000	[2]
Common stock, par value (in dollars per share)		$ 0.25	$ 0.25	[2]
Common stock, shares authorized (in shares)		4,000,000	4,000,000	[2]
Common stock, shares issued (in shares)		2,042,789	2,042,789	[2]
Common stock, shares outstanding (in shares)		2,042,789	2,042,789	[2]
Delphax [Member]
Cash and cash equivalents	[3]	$ 312,016	$ 328,327	[2]
Accounts receivable	[3]	2,593,290	1,728,411	[2]
Notes and other receivables-current		38,043	0	[2]
Inventories, net	[3]	1,563,494	1,941,729	[2]
Prepayments and other	[3]	831,321	932,794	[2]
Property and equipment, net	[3]	3,316	8,007	[2]
Accounts payable	[3]	2,398,194	2,482,578	[2]
Accrued expenses and other current liabilities	[3]	$ 3,556,390	$ 3,602,162	[2]

[1] Derived from audited consolidated financial statements

[2] Derived from audited consolidated financial statements

[3] Amounts related to Delphax as of June 30, 2017 and March 31, 2017, respectively.