Merger With Tier REIT, Inc. (Purchase Price Allocation) (Details) - TIER $ in Thousands	Mar. 25, 2019 USD ($)
Business Acquisition [Line Items]
Real estate assets	$ 2,186,719
Real estate assets held for sale	29,193
Cash and cash equivalents	84,042
Restricted cash	1,947
Notes and other receivables	7,447
Investment in unconsolidated joint ventures	349
Intangible assets	142,316
Other assets	10,039
Assets	2,462,052
Notes payable	747,549
Accounts payable and accrued expenses	48,030
Deferred income	8,388
Intangible liabilities	46,579
Other liabilities	7,796
Nonredeemable noncontrolling interests	5,348
Liabilities	863,690
Total purchase price	$ 1,598,362