Note 8 Borrowing Arrangements (Narratives) (Details)	12 Months Ended		0 Months Ended	12 Months Ended
	Mar. 31, 2014 IKB Deutshe Industriebank Loan Payable [Member] USD ($)	Mar. 31, 2014 IKB Deutshe Industriebank Loan Payable [Member] EUR (€)	Jun. 27, 2013 MCU Business [Member] USD ($) N	Mar. 31, 2014 MCU Business [Member]	Mar. 31, 2014 Minimum [Member] IKB Deutshe Industriebank Loan Payable [Member]	Mar. 31, 2014 Maximum [Member] IKB Deutshe Industriebank Loan Payable [Member]	Mar. 31, 2014 Bank of West Amended and Restated Credit Agreement December 6 2013 [Member] USD ($)	Mar. 31, 2014 Bank of West Amended and Restated Credit Agreement December 6 2013 [Member] Minimum [Member]	Mar. 31, 2014 Bank of West Amended and Restated Credit Agreement December 6 2013 [Member] Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Initiation Date							Dec. 06, 2013
Line of Credit Facility, Expiration Date							Nov. 30, 2015
Line of Credit Facility, Amount Outstanding							$ 15,000,000
Line of Credit Facility, Maximum Borrowing Capacity							50,000,000
Line of Credit Facility, Interest Rate Description							LIBOR plus a margin, an alternative base rate plus a margin or a floating rate plus a margin
Line of Credit Facility, Basis Spread on Variable Rate								0.75%	2.50%
Line of Credit Facility, Interest Rate at Period End							1.95%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.25%	0.625%
Available Credit Line for Letter of Credit							3,000,000
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Total			30,000,000
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Each Installment			15,000,000
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Number of Installment Payments			2
Business Acquisition, Cost of Acquired Entity, Due Date of First Installment Payment				Jun. 27, 2014
Business Acquisition, Cost of Acquired Entity, Due Date of Second Installment Payment				Dec. 31, 2014
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Description of Variable Rate Basis			six-month LIBOR
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Basis Spread on Variable Rate			3.00%
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Interest Rate at Period End				3.42%
Debt Instrument [Line Items]
Debt Instrument, Face Amount	12,200,000	10,000,000
Debt Instrument, Issuance Date	Jun. 10, 2005	Jun. 10, 2005
Debt Instrument, Maturity Date	Jun. 30, 2020	Jun. 30, 2020
Debt Instrument, Payment Terms	each fiscal quarter	each fiscal quarter
Debt Instrument, Description of Variable Rate Basis	three month Euribor rate	three month Euribor rate
Debt Instrument, Basis Spread on Variable Rate					0.70%	1.25%
Debt Instrument, Periodic Payment, Principal	230,000	167,000
Long-term Debt, Gross	$ 5,700,000	€ 4,200,000
Derivative, Inception Date	Jun. 30, 2010	Jun. 30, 2010
Derivative, Maturity Date	Jun. 30, 2015	Jun. 30, 2015
Derivative, Swaption Interest Rate	1.99%	1.99%
Debt Instrument, Interest Rate at Period End	2.69%	2.69%