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Common Stock and Other Equity Related Transactions - Additional Information (Detail) - $ / shares	Apr. 08, 2016	Mar. 31, 2016
6.75% Series C Cumulative Redeemable Perpetual Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends paid (usd per share)		$ 0.421875
Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock dividends paid (usd per share)	$ 0.425

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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