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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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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2011
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| Goodwill [Line Items] | ||||||
| Goodwill impairment | $ 0 | $ 0 | $ 0 | $ 2,884 | ||
| Goodwill | 0 | 801 | 2,197 | |||
| Goodwill, Period Increase (Decrease) | 0 | (1,374) | ||||
| Intangible amortization | 892 | 548 | 545 | |||
| Goodwill, Acquired During Period | 2,086 | |||||
| Indefinite-lived Intangible Assets, Impairment Losses | 0 | 0 | 0 | |||
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Noran Tel [Member]
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| Goodwill [Line Items] | ||||||
| Goodwill impairment | 0 | |||||
| Goodwill | 0 | 801 | 823 | |||
| Goodwill, Period Increase (Decrease) | (798) | 0 | ||||
| Goodwill, Acquired During Period | 0 | |||||
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Westell [Member]
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| Goodwill [Line Items] | ||||||
| Goodwill impairment | 2,884 | |||||
| Goodwill | 0 | 0 | 0 | |||
| Goodwill, Period Increase (Decrease) | 798 | 0 | ||||
| Intangible amortization | 887 | 544 | 540 | |||
| Goodwill, Acquired During Period | $ 2,086 | |||||
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Minimum [Member]
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| Goodwill [Line Items] | ||||||
| intangible assets life | 5 years | |||||
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Maximum [Member]
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| Goodwill [Line Items] | ||||||
| intangible assets life | 10 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
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment. 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
Change in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment, if any, goodwill written off related to the sale of a business or other adjustments to goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Impairment recognized during the period and allocated to the reportable segment that results from the write-down of indefinite-lived intangible assets after comparing the implied fair value of reporting unit indefinite-lived intangible assets with the carrying amount of that indefinite-lived intangible assets, which are assessed at least annually for impairment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
intangible assets life No definition available.
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