Goodwill And Other Intangible Assets Schedule of other intangible assets and related accumulated amortization (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2013		Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (2,880)		$ (2,343)
Total net intangible assets	13,157		12,396
Global Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	7,400		7,400
Local Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,866	[1]	6,979
Accumulated amortization	(2,734)	[1]	(2,217)
Finite-lived intangible assets, net	5,132	[2]	4,762
Local Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	6 years
Local 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	[1]	50
Accumulated amortization	(51)	[1]	(50)
Finite-lived intangible assets, net	24	[2]	0
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
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	341	[1]	66
Accumulated amortization	(75)	[1]	(66)
Finite-lived intangible assets, net	266	[2]	0
Amortization Period	4 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	348		244
Accumulated amortization	(18)		(10)
Finite-lived intangible assets, net	330		234
Amortization Period	20 years
Order Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	6	[1]	0
Accumulated amortization	(1)	[1]	0
Finite-lived intangible assets, net	$ 5	[2]	$ 0
Amortization Period	1 year

[1] Includes values for iTVX based on provisional purchase price allocation.

[2] Includes amounts for iTVX based on provisional purchase price allocation.