U.S. Government Securities	12 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
U.S. Government Securities	U.S. Government SecuritiesThe acquisition of the One Westside and 10850 Pico properties in 2018 included the assumption of debt that was, in substance, defeased through the purchase of U.S. Government-backed securities. The securities were held to maturity and were carried at amortized cost on the Consolidated Balance Sheet. The remaining securities matured during the year ended December 31, 2022, resulting in a balance of $0 as of December 31, 2022, as compared to a balance of $129.3 million as of December 31, 2021.

The entire disclosure for investments in certain debt and equity securities.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-URI https://asc.fasb.org/subtopic&trid=2209399

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
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-URI https://asc.fasb.org/subtopic&trid=2176304

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1403
-Paragraph (b)

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