Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 9,031	$ 8,991
Accumulated Amortization	(4,824)	(3,943)
Intangible Assets, Net	4,207	5,048
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,658	2,377
Accumulated Amortization	(1,211)	(1,053)
Intangible Assets, Net	1,447	1,324
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	58	58
Accumulated Amortization	(58)	(58)
Intangible Assets, Net	0	0
Trade name and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,715	1,956
Accumulated Amortization	0	0
Intangible Assets, Net	1,715	1,956
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,600	3,600
Accumulated Amortization	(3,054)	(2,512)
Intangible Assets, Net	546	1,088
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	900	900
Accumulated Amortization	(426)	(265)
Intangible Assets, Net	474	635
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	100	100
Accumulated Amortization	(75)	(55)
Intangible Assets, Net	$ 25	$ 45