Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)		Dec. 31, 2017	Mar. 31, 2017
Cash and cash equivalents		$ 7,985,088	$ 2,763,365	[1]
Allowance for doubtful accounts		976,000	979,000	[2]
Accounts receivable		16,718,738	18,923,787	[1]
Inventories, net		19,667,205	19,778,843	[1]
Prepayments and other		1,435,265	1,672,475	[1]
Property and equipment, net		18,138,660	5,324,488	[1]
Accounts payable		9,575,439	11,571,156	[1]
Accrued expenses and other current liabilities		$ 8,112,945	$ 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]	$ 240,468	$ 328,327	[2]
Accounts receivable	[3]	661,749	1,728,411	[2]
Inventories, net	[3]	169,048	1,941,729	[2]
Prepayments and other	[3]	508,980	932,794	[2]
Property and equipment, net	[3]	0	8,007	[2]
Accounts payable	[3]	2,283,154	2,482,578	[2]
Accrued expenses and other current liabilities	[3]	$ 3,111,124	$ 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 December 31, 2017 and March 31, 2017, respectively.