Goodwill And Other Intangible Assets Expected amortization expense (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Mar. 31, 2013
Local Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Remainder of Fiscal 2014	$ 441	[1]
2015	882	[1]
2016	882	[1]
2017	883	[1]
2018	807	[1]
Therafter	1,237	[1]
Finite-lived intangible assets, net	5,132	[1]	4,762
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Remainder of Fiscal 2014	6	[1]
2015	13	[1]
2016	5	[1]
2017	0	[1]
2018	0	[1]
Therafter	0	[1]
Finite-lived intangible assets, net	24	[1]	0
Patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Remainder of Fiscal 2014	9
2015	17
2016	17
2017	17
2018	17
Therafter	253
Finite-lived intangible assets, net	330		234
Existing Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Remainder of Fiscal 2014	34	[1]
2015	69	[1]
2016	69	[1]
2017	68	[1]
2018	26	[1]
Therafter	0	[1]
Finite-lived intangible assets, net	266	[1]	0
Order Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Remainder of Fiscal 2014	3	[1]
2015	2	[1]
2016	0	[1]
2017	0	[1]
2018	0	[1]
Therafter	0	[1]
Finite-lived intangible assets, net	$ 5	[1]	$ 0

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