Goodwill And Other Intangible Assets Schedule of other intangible assets and related accumulated amortization (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (5,005)	$ (4,203)
Total net intangible assets	16,291	16,384
Global Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	7,400	7,400
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	12,329	12,220
Accumulated amortization	(4,650)	(3,899)
Finite-lived intangible assets, net	$ 7,679	8,321
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	6 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 75	75
Accumulated amortization	(75)	(75)
Finite-lived intangible assets, net	$ 0	0
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	2 years
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years
Existing Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 851	334
Accumulated amortization	(211)	(175)
Finite-lived intangible assets, net	$ 640	159
Existing Technology [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	4 years
Existing Technology [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	5 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 639	556
Accumulated amortization	(67)	(52)
Finite-lived intangible assets, net	$ 572	504
Amortization Period	20 years
Order Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 2	2
Accumulated amortization	(2)	(2)
Finite-lived intangible assets, net	$ 0	$ 0
Amortization Period	1 year