Real Estate, Net - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	May 31, 2018
Depreciation	$ 402,000	$ 424,000	$ 1,300,000	$ 754,000
Total Purchase Price Of Property					$ 81,200,000
Business Acquisition, Transaction Costs					$ 700,000
Percentage of lease real estate property			45.70%
Maximum [Member]
Property Tax Abatement			25 years
Minimum [Member]
Property Tax Abatement			15 years
Real estate under development | Minimum [Member]
Property Tax Abatement			15 years
Building and building improvements | Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives			27.5 years
Building and building improvements | Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives			one year
Tenant improvements
Property, Plant and Equipment, Estimated Useful Lives			Shorter of remaining term of the lease or useful life
Tenant improvements | Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives			27.5 years
Tenant improvements | Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives			one year
SCA [Member]
Construction Supervision Fee receivable	5,000,000		$ 5,000,000
Contract Receivable	$ 41,500,000		41,500,000
Construction Supervision Fee			42,200,000
Construction Costs Reimbursed			$ 38,300,000