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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 14, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jan. 01, 2019
Loss Contingencies [Line Items]
Loss contingency accrual, period increase (decrease)		$ 12,000		$ 25,500
Net loss from discontinued operations		(12,000)	$ 0	(25,500)	$ 0
Operating lease right-of-use asset		2,493		2,493
Lease liabilities		$ 2,435		$ 2,435
Accounting Standards Update 2016-02
Loss Contingencies [Line Items]
Operating lease right-of-use asset						$ 2,890
Lease liabilities						$ 3,114
Settled Litigation | University House Communities Group, Inc
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party	$ 30,000

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