Supplemental Cash Flow Information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Non-cash operating, financing and investing activities:
Offering costs payable to related parties	$ 629,376	$ 1,428,461
Offering costs payable to third parties		(32,311)
Distribution and shareholder servicing fee payable to related parties	94,518	475,502
Cash distributions on common stock declared but not yet paid	1,315,781	697,125	$ 1,037,799
Stock issued from distribution reinvestment plan	1,243,229	605,527
Subscriptions receivable	110,000	619,500	$ 1,431,000
Escrow deposits funded directly by mortgage notes payable	797,855	243,637
Non-cash activity related to acquisitions:
Mortgage notes payable used to acquire real properties	45,192,145	32,381,363
Cash paid during the period for:
Interest	$ 2,481,341	$ 644,876