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Related Party Transactions - QIA (Details) - Q REIT Holding LLC - USD ($)		12 Months Ended
	Aug. 23, 2016	Dec. 31, 2018
Noncontrolling Interest [Line Items]
Minimum interest required to be held by affiliate of QIA in order to purchase new equity securities	5.00%
Threshold of equity securities issuance where top up rights are exercisable	$ 1,000,000.0
Right to first offer to co-Invest, period (in months)		30 months
JV partnership, term (in years)		5 years
Extended term, if one joint venture transaction consummates (in days)		30 months
Threshold to indemnify	10.00%

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