Note 11 - Lease Arrangements (Details Textual)	4 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2016 USD ($) ft²	Mar. 31, 2016 CAD ft²	Mar. 31, 2016 GBP (£) ft²	Mar. 31, 2015 USD ($)
Operating Leases, Rent Expense		$ 3,038,000			$ 2,309,000
Delphax [Member]
Operating Leases, Rent Expense	$ 226,000
GAS Leases [Member]
Lessee, Operating Lease, Term of Contract		1 year	1 year	1 year
Kinston, North Carolina [Member]
Number of Additional Lease Option Periods		4	4	4
Lessee, Operating Lease, Renewal Term		5 years	5 years	5 years
Area of Lease Facility | ft²		53,000	53,000	53,000
Area of Total Facility | ft²		66,000	66,000	66,000
Mississauga, Ontario [Member] | Delphax [Member]
Operating Leases, Rent Expense		$ 222,000	CAD 384,000
UNITED KINGDOM | Delphax [Member]
Operating Leases, Rent Expense		90,000		£ 62,400
Company Controlled by Company's Officer and Directors [Member]
Operating Leases Monthly Rent		$ 14,862
Number of Additional Lease Option Periods		3	3	3
Lessee, Operating Lease, Renewal Term		2 years	2 years	2 years
Related Party [Member]
Operating Leases, Rent Expense		$ 178,000			$ 177,000