Transactions With Tier Reit, Inc. (Purchase Price Allocation) (Details) - TIER $ in Thousands	Mar. 25, 2019 USD ($)
Business Acquisition [Line Items]
Real estate assets	$ 2,202,073
Real estate assets held for sale	20,835
Cash	84,042
Restricted cash	1,947
Notes and other receivables	8,278
Investment in unconsolidated joint ventures	331
Intangible assets	141,184
Other assets	10,040
Total assets acquired	2,468,730
Notes payable	747,549
Accounts payable and accrued expenses	53,321
Deferred income	8,388
Intangible liabilities	47,988
Other liabilities	7,793
Nonredeemable noncontrolling interests (excluding CPLP)	5,329
Total liabilities acquired	870,368
Total purchase price	$ 1,598,362