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Share-Based Compensation (Schedule of Share-Based Compensation Information) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Share Based Compensation [Abstract] |  |  |  |
Expense relating to share/unit grants | $ 1,031,000 | $ 1,140,000 | $ 2,108,000 | $ 2,237,000
Amounts capitalized | (59,000) | (112,000) | (122,000) | (194,000)
Total charged to operations | $ 972,000 | $ 1,028,000 | $ 1,986,000 | $ 2,043,000

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