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Goodwill and Intangible Assets (Details Textual) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2013
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2012
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| Goodwill [Line Items] | ||||
| Goodwill impairment | $ 2,900 | $ 2,884 | ||
| Finite-Lived Intangible Assets, Net | 5,063 | 32,356 | 5,063 | |
| Indefinite-lived Intangible Assets, Impairment Losses | 0 | 0 | 0 | |
| Intangible amortization | 4,908 | 887 | 544 | |
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Westell [Member]
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| Goodwill [Line Items] | ||||
| Goodwill impairment | 2,884 | |||
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Minimum [Member]
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| Goodwill [Line Items] | ||||
| Finite-Lived Intangible Asset, Useful Life | 1 month | |||
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Maximum [Member]
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| Goodwill [Line Items] | ||||
| Finite-Lived Intangible Asset, Useful Life | 10 years | |||
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Product Technology [Member]
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| Goodwill [Line Items] | ||||
| Finite-Lived Intangible Assets, Net | 2,832 | 9,830 | 2,832 | |
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Product Technology [Member] | Noran Tel [Member]
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| Goodwill [Line Items] | ||||
| Impairment of Intangible Assets, Finite-lived | 245 | |||
| Finite-Lived Intangible Assets, Net | $ 205 | |||
| Finite-Lived Intangible Asset, Useful Life | 2 years | |||
| X | ||||||||||
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- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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| X | ||||||||||
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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