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Product Warranties (Details Textual) (USD $)
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3 Months Ended | 6 Months Ended | ||||
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Sep. 30, 2012
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Mar. 31, 2012
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Sep. 30, 2012
Westell [Member]
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Sep. 30, 2012
CNS segment products [Member]
Maximum [Member]
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Sep. 30, 2012
CNS segment products [Member]
Minimum [Member]
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Sep. 30, 2012
ANTONE [Member]
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| Product Warranties (Textual) [Abstract] | ||||||
| Current portions of warranty reserve | $ 390,000 | $ 110,000 | ||||
| Long-term portions of the warranty reserve | 108,000 | 133,000 | ||||
| Basic limited warranty maximum range | 7 years | 3 years | 1 year | |||
| Specific pre-acquisition ANTONE product warranty in excess of acquired limit | 303,000 | |||||
| Indemnification receivable from sellers of ANTONE | $ 303,000 | |||||
| X | ||||||||||
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- Definition
For indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the indemnification benefit which may be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability. No definition available.
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| X | ||||||||||
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- Definition
Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid after one year or beyond the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability. No definition available.
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| X | ||||||||||
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- Definition
Basic limited warranty maximum range. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Specific pre acquisition product warranty accrual additions. No definition available.
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