The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Real Estate Assets - Additional Information (Details)	1 Months Ended			3 Months Ended	6 Months Ended
Real Estate Assets - Additional Information (Details)	Feb. 28, 2018 USD ($) Land	May 31, 2017 USD ($)	Mar. 31, 2017	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)
Real Estate [Line Items]
Gain (loss) on sale of real estate assets, net				$ (16,075)	$ 7,152,512
Northern View [Member]
Real Estate [Line Items]
Percentage of limited partnership interest sold			99.00%
Omaha, NE [Member]
Real Estate [Line Items]
Number of contiguous tracts of land acquired \| Land	2
Purchase price of land	$ 2,700,000
St. Petersburg, Florida [Member]
Real Estate [Line Items]
Gain (loss) on sale of real estate assets, net		$ (22,000)