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Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract] |
Amount paid to settlement of claims | $ 1.3 us-gaap_LitigationSettlementAmount

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

X
- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration