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Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Accumulated Depreciation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Balance at January 1	$ 100,311,974	$ 85,238,614	$ 69,696,727
Current year depreciation expense	34,398,782	20,441,780	19,507,398
Disposition of real estate	(6,129,059)	(5,368,420)	(3,737,114)
Reclassified as assets held for sale	(833,887)	0	(228,397)
Balance at December 31	$ 127,747,810	$ 100,311,974	$ 85,238,614

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- Definition

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Assets Held-For-Sale Reclassified

+ References

No definition available.

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- Definition

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Excluding Assets Held-For-Sale

+ References

No definition available.

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- References

No definition available.

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- Definition

Amount of decrease to accumulated depreciation for 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=6590653&loc=d3e638233-123024

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- Definition

Amount of depreciation expense of real estate investments 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=6590653&loc=d3e638233-123024

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