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Subsequent Events (Details Textual) (Subsequent Event [Member]) In Millions, unless otherwise specified	May 05, 2015
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1.0us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	1.2us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration