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Earnings Per Share (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2015 | [1] | Sep. 30, 2015 | [1] | Jun. 30, 2015 | [1] | Mar. 31, 2015 | [1] | Dec. 31, 2014 | [1] | Sep. 30, 2014 | [1] | Jun. 30, 2014 | [1] | Mar. 31, 2014 | [1] | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 21,616,000 | $ 17,611,000 | $ 4,519,000
Preferred stock dividends |  |  |  |  |  |  |  |  | (14,408,000) | (14,408,000) | (14,413,000)
Preferred stock redemption costs |  |  |  |  |  |  |  |  |  |  | (1,166,000)
Net loss attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 366,000 | 358,000 | 247,000
Net earnings allocated to unvested shares |  |  |  |  |  |  |  |  | (701,000) | (734,000) | (758,000)
Income (loss) from continuing operations attributable to vested common shares |  |  |  |  |  |  |  |  | 6,873,000 | 2,827,000 | (11,571,000)
Income from discontinued operations, net of noncontrolling interests, attributable to vested common shares |  |  |  |  |  |  |  |  | 164,000 | 11,012,000 | 9,682,000
Net income (loss) attributable to vested common shares outstanding |  |  |  |  |  |  |  |  | $ 7,037,000 | $ 13,839,000 | $ (1,889,000)
Weighted average number of vested common shares outstanding |  |  |  |  |  |  |  |  | 81,356,000 | 75,311,000 | 68,381,000
Earnings per vested common share, basic and diluted |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  |  |  |  |  |  |  |  | $ 0.09 | $ 0.04 | $ (0.17)
Discontinued operations |  |  |  |  |  |  |  |  | 0.00 | 0.14 | 0.14
Earnings (loss) per vested common share, basic and diluted | $ 0.04 | $ 0.03 | $ 0.02 | $ 0.00 | $ 0.01 | $ 0.03 | $ 0.17 | $ (0.03) | $ 0.09 | $ 0.18 | $ (0.03)
[1] | Differences between the sum of the four quarterly per share amounts and the annual per share amounts are attributable to the effect of the weighted average outstanding share calculations for the respective periods.

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- Definition Income Loss From Continuing Operations Basic And Diluted + References No definition available. + Details
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- Definition Income Loss From Discontinued Operations Net Of Noncontrolling Interests + References No definition available. + Details
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- Definition Net Income Loss Available To Common Stockholders Basic And Diluted + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests. + 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=7656940&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=7656940&loc=SL4568447-111683 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and 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=7656940&loc=SL4569616-111683 + Details
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- Definition The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares. + References No definition available. + Details
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- Definition Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation, when the per share amount is the same. + References No definition available. + Details
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- Definition The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. + References No definition available. + Details
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- Definition The excess of (1) fair value of the consideration transferred to the holders of the preferred stock over (2) the carrying amount of the preferred stock in the registrant's balance sheet, during the accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section S99 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27010884&loc=d3e42851-122695 + Details
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- Definition 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. + References 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=7655603&loc=SL5780133-109256 + Details
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- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). + References No definition available. + Details
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