Deferred Management Internalization (Detail) - Internalization Consideration - USD ($)	1 Months Ended		9 Months Ended
	Dec. 31, 2019	Apr. 30, 2019	Sep. 30, 2020
Shares Issued in Period, shares	(400,000)	(400,000)
Internalization Consideration [Member]
Deferred Shares to Purchase, shares			800,000
Deferred Shares to Purchase, value			$ 17,800,000
Share Price at $17.50
Right To Purcharse Shares, shares			1,100,000
Right to Purchase Shares, value			$ 19,250,000
Share Price at $17.50 | April 1, 2019 [Member]
Shares Issued in Period, shares			(400,000)
Shares Issued in Period, value			$ (7,000,000)
Share Price at $17.50 | Dec 31, 2019 [Member]
Shares Issued in Period, shares			(400,000)
Shares Issued in Period, value			$ (7,000,000)
Share Price at $25.10
Right To Purcharse Shares, shares			500,000
Right to Purchase Shares, value			$ 12,550,000
Total Investment in real estate and fixed assets [Member]
Right To Purcharse Shares, shares			1,600,000
Right to Purchase Shares, value			$ 31,800,000