Goodwill And Other Intangible Assets Goodwill rollforward (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Sep. 30, 2013		Mar. 31, 2013
Goodwill [Roll Forward]
Beginning balance	$ 4,998		$ 5,101
Goodwill, Acquired During Period	1,735	[1]
Currency translation	104		(103)
Ending balance	6,837		4,998
AMI [Member]
Goodwill [Roll Forward]
Beginning balance	4,467		4,570
Goodwill, Acquired During Period	1,735	[1]
Currency translation	104		(103)
Ending balance	6,306		4,467
HE [Member]
Goodwill [Roll Forward]
Beginning balance	531		531
Currency translation
Ending balance	$ 531		$ 531

[1] Value based on provisional purchase price allocation.