Proceeds from Issuance of Common Stock, Net of Offering Costs

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Aggregate dividends declared 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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- Definition

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

+ References

No definition available.

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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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- Definition

Amount per share or per unit of equity securities issued by non-development stage entity.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: 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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Stockholders' Equity (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Mar. 15, 2016	Mar. 31, 2016	Mar. 31, 2015
Class of Stock [Line Items]
Proceeds from issuance of common stock as a result of follow-on public offering			$ 193,148
Dividend declared per share of common stock (in dollars per share)		$ 0.46	$ 0.44
Common Stock [Member]
Class of Stock [Line Items]
Dividend declared per share of common stock (in dollars per share)	$ 0.46
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Dividend rate, preferred stock		8.625%
Dividend declared per share of preferred stock (in dollars per share)	0.5391
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Dividend rate, preferred stock		8.00%
Dividend declared per share of preferred stock (in dollars per share)	$ 0.50
Follow On Public Offering [Member] \| Common Stock [Member]
Class of Stock [Line Items]
New issuance of stock (shares)			11,500,000
Price per share of newly issued stock (in dollars per share)			$ 16.82