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Investments in Real Estate - Investments in Existing Properties (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Investments in Real Estate |  |
Capitalized costs on existing properties | $ 3,200,000 | $ 3,400,000
Re-leasing costs | 917,000 | 410,000
Recurring capital expenditures | 11,000 | 341,000
Nonrecurring building improvements | $ 2,300,000 | $ 2,600,000

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- Definition Amount of nonrecurring building real estate improvements related to real estate investments during the period. + References No definition available. + Details
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- Definition Amount of re-leasing costs related to real estate investments during the period. + References No definition available. + Details
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- Definition Amount of recurring capital expenditures real estate improvements related to real estate investments during the period. + References No definition available. + Details
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- Definition Amount of land and buildings and improvements made to real estate investments and capitalized after acquisition for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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