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CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) (8.50% Series C preferred stock)	9 Months Ended
	Sep. 30, 2014
8.50% Series C preferred stock
Preferred stock, dividend rate (as a percent)	8.50%

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration