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Contingent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Mar. 31, 2013
--- | --- | ---
Contingent Liabilities |  |
Contingent liability, net of discount | $ 841 | $ 841
Contingent Liability for Acquisition |  |
Contingent Liabilities |  |
Contingent liability, net of discount | $ 841 | $ 841

X
- Definition Noncurrent portion of the fair value as of the acquisition date of potential payments under the contingent consideration arrangement, including cash and shares as applicable. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionContingentConsiderationAtFairValueNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration