Description of Business and Basis of Presentation (Details) shares in Thousands, ft² in Thousands	6 Months Ended
	Jun. 30, 2023 ft² shares	Jun. 30, 2022 shares
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Distribution of taxable income to qualify as REIT, percentage	100.00%
Portfolio of real estate assets, office space area	18,800
Portfolio of real estate assets, retail space area	310
Variable Interest Entity, Primary Beneficiary | CPLP
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Common units (in shares) | shares	25	25
CPLP
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Percentage of partnership units owned by the company (more than)	99.00%