Transactions with Related Parties	12 Months Ended
Dec. 31, 2019
Related Party Transactions [Abstract]
Transactions with Related Parties	Transactions with Related PartiesWe lease office space from Two North Riverside Plaza Joint Venture Limited Partnership, an entity affiliated with Samuel Zell, Chairman of our Board of Directors. Payments made in accordance with the lease agreement to this entity amounted to approximately $1.7 million for the year ended December 31, 2019, and $1.4 million for the years ended December 31, 2018 and 2017.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-URI http://asc.fasb.org/topic&trid=2122745

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