Merger With Tier REIT, Inc. (Purchase Price Allocation) (Details) - TIER $ in Thousands	Mar. 25, 2019 USD ($)
Business Acquisition [Line Items]
Real estate assets	$ 2,202,712
Real estate assets held for sale	21,395
Cash and cash equivalents	84,042
Restricted cash	1,947
Notes and other receivables	6,524
Investment in unconsolidated joint ventures	331
Intangible assets	141,184
Other assets	9,954
Assets	2,468,089
Notes payable	747,549
Accounts payable and accrued expenses	53,054
Deferred income	8,131
Intangible liabilities	47,988
Other liabilities	7,676
Nonredeemable noncontrolling interests	5,329
Liabilities	869,727
Total purchase price	$ 1,598,362