Name:	us-gaap_EquityClassOfTreasuryStockLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

The cash outflow to reacquire common stock during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

Name:	us-gaap_PaymentsForRepurchaseOfCommonStock
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

No definition available.

Name:	us-gaap_StockRepurchaseProgramExpirationDate
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Data Type:	xbrli:dateItemType
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Period Type:	duration

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

No definition available.

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

Total cost of shares repurchased divided by the total number of shares repurchased.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 505
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Name:	us-gaap_TreasuryStockAcquiredAverageCostPerShare
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Data Type:	num:perShareItemType
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Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 505
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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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Name:	us-gaap_TreasuryStockSharesAcquired
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Data Type:	xbrli:sharesItemType
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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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-Topic 505
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-Paragraph 1
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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