Merger With Tier REIT, Inc. (Purchase Price Allocation) (Details) - TIER $ in Thousands	Mar. 25, 2019 USD ($)
Business Acquisition [Line Items]
Real estate assets	$ 2,186,143
Real estate assets held for sale	29,193
Cash and cash equivalents	84,042
Restricted cash	1,936
Notes and other receivables	6,416
Investment in unconsolidated joint ventures	349
Intangible assets	146,943
Other assets	11,836
Assets	2,466,858
Notes payable	747,549
Accounts payable and accrued expenses	48,173
Deferred income	8,388
Intangible liabilities	51,403
Other liabilities	7,796
Nonredeemable noncontrolling interest	5,187
Liabilities	868,496
Total purchase price	$ 1,598,362