The number of common units tendered for conversion into shares of common stock.

No definition available.

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- Definition

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

+ References

+ Details

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- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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 FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

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Balance Type:	debit
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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SUBSEQUENT EVENTS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 30, 2015	Feb. 02, 2015	Jan. 02, 2015	Jan. 01, 2015
Subsequent events
Dividends paid	$ (56,550)us-gaap_DividendsCash	$ (47,594)us-gaap_DividendsCash	$ (23,066)us-gaap_DividendsCash
9.25% Series A Preferred Stock
Subsequent events
Preferred stock, dividend rate (as a percent)	9.25%	9.25%
7.875% Series B Preferred Stock
Subsequent events
Preferred stock, dividend rate (as a percent)	7.875%	7.875%
7.125% Series C Preferred Stock
Subsequent events
Preferred stock, dividend rate (as a percent)	7.125%	7.125%
Subsequent Event \| 9.25% Series A Preferred Stock
Subsequent events
Cash dividends declared, preferred stock (in dollars per share)				$ 0.578125
Subsequent Event \| 7.875% Series B Preferred Stock
Subsequent events
Cash dividends declared, preferred stock (in dollars per share)				$ 0.4921875
Subsequent Event \| 7.125% Series C Preferred Stock
Subsequent events
Cash dividends declared, preferred stock (in dollars per share)				$ 0.4453125
Subsequent Event \| Common Stock
Subsequent events
Cash dividends declared, common stock (in dollars per share)				$ 0.1175
Subsequent Event \| Noncontrolling Interest \| Common units
Subsequent events
Common units redeemed						20,691
Common units tendered					94,256
Performance-Based \| Restricted Stock Awards
Subsequent events
Vested (in shares)	(45,551)
Performance-Based \| Restricted Stock Awards \| Subsequent Event
Subsequent events
Vested (in shares)							128,185
Dividends paid							$ 100