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Stockholder's Equity - Preferred Stock (Detail) (Series A Preferred Stock [Member], USD $)	0 Months Ended
	Dec. 09, 2013	Sep. 16, 2013	Jun. 12, 2013	Mar. 15, 2013	Dec. 13, 2012	Sep. 13, 2012
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Dividend Amount	$ 0.5391	$ 0.5391	$ 0.5391	$ 0.5391	$ 0.5391	$ 0.4432

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- Definition

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

+ References

No definition available.

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