v2.4.0.6

Share Repurchase Plan Additional Information (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended
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Mar. 08, 2013
Stock Repurchase Program, Authorized Amount | $ 50

X
- Definition The amount authorized by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration