Summary of Significant Accounting Policies - Consolidated Joint Ventures (Details) - VIE, primary beneficiary		9 Months Ended
	Dec. 18, 2020	Sep. 30, 2021
1455 Market
Variable Interest Entity
VIE, ownership Interest		55.00%
Hill7
Variable Interest Entity
VIE, ownership Interest		55.00%
One Westside and 10850 Pico
Variable Interest Entity
VIE, ownership Interest		75.00%
Ferry Building
Variable Interest Entity
VIE, ownership Interest		55.00%
Sunset Bronson Studios, ICON, CUE
Variable Interest Entity
VIE, ownership Interest		51.00%
Sunset Gower Studios
Variable Interest Entity
VIE, ownership Interest		51.00%
Sunset Las Palmas Studios, Harlow
Variable Interest Entity
VIE, ownership Interest		51.00%
Sunset Services Holdings, LLC
Variable Interest Entity
VIE, ownership Interest		51.00%
EPIC
Variable Interest Entity
VIE, ownership Interest		51.00%
None (Hudson Media and Entertainment Management)
Variable Interest Entity
VIE, ownership Interest		51.00%
6040 Sunset
Variable Interest Entity
VIE, ownership Interest		51.00%
1918 Eighth
Variable Interest Entity
VIE, ownership Interest	55.00%	55.00%
Sunset Bronson Services, LLC, Sunset Gower Services, LLC and Sunset Las Palmas Services, LLC | Sunset Services Holdings, LLC
Variable Interest Entity
VIE, ownership Interest		100.00%