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Earnings Per Share (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 6,417,000	$ (761,000)	$ 13,973,000	$ 5,610,000
Preferred stock dividends	(3,535,000)	(3,602,000)	(10,739,000)	(10,806,000)
Preferred stock redemptions costs	(7,890,000)		(7,890,000)
Net (income) loss attributable to noncontrolling interests	(117,000)	74,000	(371,000)	254,000
Net earnings allocated to unvested shares	(190,000)	(183,000)	(564,000)	(533,000)
Net (loss) attributable to vested common shares outstanding	$ (5,315,000)	$ (4,472,000)	$ (5,591,000)	$ (5,475,000)
Weighted average number of vested common shares outstanding	85,642,000	81,676,000	83,049,000	81,670,000
Net (loss) per commons share attributable to common shareholders, basic and diluted	$ (0.06)	$ (0.05)	$ (0.07)	$ (0.07)

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- Definition

Net income loss available to common stockholders basic and diluted.

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- Definition

Preferred stock redemption costs.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568447-111683

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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683

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The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.

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Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64863997&loc=SL5780133-109256

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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