Note 8 Borrowing Arrangements (Narratives) (Details)	12 Months Ended					3 Months Ended		1 Months Ended		0 Months Ended	12 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2013 USD ($)	Mar. 31, 2015 June 2005 IKB Deutshe Industriebank Loans Payable [Member] USD ($)	Mar. 31, 2015 June 2005 IKB Deutshe Industriebank Loans Payable [Member] EUR (€)	Sep. 30, 2014 Notes Payable, Other Payables [Member] USD ($)	Jun. 30, 2014 Notes Payable, Other Payables [Member] USD ($)	Apr. 30, 2015 April 2015 IKB Deutshe Industriebank Loan Payable [Member] USD ($)	Apr. 30, 2015 April 2015 IKB Deutshe Industriebank Loan Payable [Member] EUR (€)	Jun. 27, 2013 MCU Business [Member] USD ($) N	Mar. 31, 2015 Minimum [Member] June 2005 IKB Deutshe Industriebank Loans Payable [Member]	Mar. 31, 2015 Maximum [Member] June 2005 IKB Deutshe Industriebank Loans Payable [Member]	Mar. 31, 2015 Bank of West Amended and Restated Credit Agreement December 6 2013 [Member] USD ($)	Mar. 31, 2015 Bank of West Amended and Restated Credit Agreement December 6 2013 [Member] Minimum [Member]	Mar. 31, 2015 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													$ 45,000,000
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													1.94%
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, Installment Payments, Total										30,000,000
Business Acquisition, Cost of Acquired Entity, Installment Payments, Each Installment										15,000,000
Business Acquisition, Cost of Acquired Entity, Installment Payments, Number of Installment Payments										2
Business Acquisition, Cost of Acquired Entity, Payment Date of First Installment Payment										Jun. 26, 2014
Business Acquisition, Cost of Acquired Entity, Payment Date of Second Installment Payment										Dec. 23, 2014
Debt Instrument [Line Items]
Debt Instrument, Face Amount				12,200,000	10,000,000			7,200,000	6,500,000
Debt Instrument, Issuance Date				Jun. 10, 2005	Jun. 10, 2005			Apr. 01, 2015	Apr. 01, 2015
Debt Instrument, Maturity Date				Jun. 30, 2020	Jun. 30, 2020			Mar. 31, 2022	Mar. 31, 2022
Debt Instrument, Payment Terms				each fiscal quarter	each fiscal quarter			each fiscal quarter	each fiscal quarter
Debt Instrument, Description of Variable Rate Basis				three month Euribor rate	three month Euribor rate
Debt Instrument, Interest Rate, Stated Percentage								1.75%	1.75%
Debt Instrument, Basis Spread on Variable Rate											0.70%	1.25%
Debt Instrument, Periodic Payment, Principal				181,000	167,000			256,000	232,000
Long-term Debt, Gross				3,800,000	3,500,000
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, Effective Percentage				2.69%	2.69%
Loans Assumed from Business Acquisition							723,000
Repayments of loans and notes payable	$ 1,144,000	$ 1,000,000	$ 1,667,000			$ 99,000
Debt Instrument, Maturity Date, Description							from fiscal 2017 to fiscal 2021