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Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Real Estate Properties (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract] |  |  |
Balance at January 1 | $ 2,346,339,886 | $ 1,761,646,695 | $ 1,299,254,832
Construction and acquisition cost | 1,175,354,194 | 644,483,047 | 519,369,366
Impairment charge | (4,136,998) | (1,609,000) | (1,163,000)
Disposition of real estate | (39,468,937) | (53,596,678) | (55,814,503)
Reclassified as assets held for sale | (1,332,348) | (4,584,178) | 0
Balance at December 31 | $ 3,476,755,797 | $ 2,346,339,886 | $ 1,761,646,695

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- Definition Amount of real estate construction and acquisition cost incurred during the period. + References No definition available. + Details
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- Definition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Assets Held-For-Sale Reclassified + References No definition available. + Details
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- Definition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross, Excluding Assets Held-For-Sale + References No definition available. + Details
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- Definition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Impairment Charge + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Footnote 4)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
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