Distributions to noncontrolling interest holders.

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- Definition

Maximum Percent of Awards as a Percent of Total Outstanding

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Periodic Vesting Percentage

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Percentage of vesting of share-based compensation awards.

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Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 15, 2016	Apr. 15, 2015	Feb. 28, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions To Non-controlling Interest Holders						$ 1,475	$ 1,361
Stock options issued (in shares)				0		0		0
Common stock, par value (in dollars per share)				$ 0.01		$ 0.01		$ 0.01
Payments of Dividends						$ 37,881	37,305
New Multi-Year Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation				$ 2,100	$ 2,000	$ 8,600	2,200
Stock Options \| Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				500,000.0		500,000.0
Restricted Stock \| Restricted Share Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						5,107
Equity-based compensation				$ 200	200	$ 300	200
Compensation cost not yet recognized				1,300		$ 1,300
Shares expected to vest						2 years 9 months 7 days
Performance Shares \| New Multi-Year Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions To Non-controlling Interest Holders				900		$ 1,000
Granted (in shares)	805,679	367,059
Share-based payment award, award vesting rights						33.33%
Payments of Dividends					300		$ 400
Performance Shares \| New Multi-Year Outperformance Plan \| 12 Month Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						12 months
Performance Shares \| New Multi-Year Outperformance Plan \| 3 Year Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						3 years
Performance Shares \| New Multi-Year Outperformance Plan \| 24 Month Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						24 months
Advisor
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions To Non-controlling Interest Holders				$ 1,000	$ 800
Advisor \| Restricted Stock \| Restricted Share Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						4 years
Granted (in shares)			279,365
Forfeited (in shares)			79,805
Share-based payment award, award vesting rights						25.00%
Independent Directors \| Restricted Stock \| Restricted Share Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percent of awards as a percent of total outstanding				10.00%		10.00%
Vesting period						3 years
Vesting percentage				33.30%		33.30%