Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	$ 9,772	$ 14,676	$ 31,953	$ 40,933
Due to (from) related parties	36,540		$ 36,540		$ 42,782
Related party allocation percentage of annual total return			12.50%
Percentage of annual hurdle amount			5.00%
Dealer Manager | Selling Commissions
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	331	2,262	$ 2,635	5,822
Due to (from) related parties	0		0		0
Dealer Manager | Dealer Manager Fee
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	59	411	472	1,041
Due to (from) related parties	0		0		0
Dealer Manager | Distribution and Stockholder Servicing Fees
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	642	5,369	8,174	14,056
Due to (from) related parties	26,417		26,417		22,479
The Advisor | Organization and Offering Costs
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	955	821	2,805	3,109
Due to (from) related parties	6,238		6,238		7,763
The Advisor | Asset Management Fee
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	2,974	2,177	8,512	5,465
Due to (from) related parties	2,734		2,734		2,353
The Advisor | Other Fees
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	2,211	1,009	1,158	2,233
Due to (from) related parties	1,321		1,321		1,106
The Advisor | Performance Participation Allocation
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	0	1,053	0	3,650
Due to (from) related parties	0		0		7,713
Hines | Interest Expense
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	0	72	362	819
Due to (from) related parties	0		0		443
Hines | Property Management Fees
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	504	404	1,699	1,219
Due to (from) related parties	233		233		287
Hines | Development and Construction Management Fees
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	37	36	127	326
Due to (from) related parties	140		140		30
Hines | Leasing Fee
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	160	95	378	432
Due to (from) related parties	327		327		344
Hines | Rent Payments
Related Party Transactions
Payments received from related parties			1,800
Hines | Expense Reimbursements
Related Party Transactions
Related party transaction, fees and expense reimbursements incurred	1,899	$ 967	5,631	$ 2,761
Due to (from) related parties	$ (870)		(870)		$ 264
Payments received from related parties			$ 900