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Consolidated Statement Of Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2011
Consolidated Statement Of Shareholders' Equity [Abstract]
Series A preferred stock cash dividend, per share	$ 1.00

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- Definition

Aggregate dividends paid during the period for each share of preferred stock outstanding.

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Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:	us-gaap
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