Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Fair Value Measures - Narrative (Details)

v3.22.4
Orion Office REIT, Fair Value Measures - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
USD ($)
property
Dec. 31, 2021
USD ($)
property
Dec. 31, 2020
USD ($)
property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Number of properties | property 18 10 1
Impairments $ 66,359 $ 49,859 $ 18,671
Impairment Long Lived Asset Held For Use Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag Impairments Impairments  
Assets Impaired During The Twelve Months Ended December 31 2022      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Impairment, long-lived asset, held-for-use $ 39,500    
Impairment of properties held for sale 200    
Impairment of properties disposed of $ 26,700    
Assets Impaired During The Twelve Months Ended December 31 2022 | Estimated Sales Price      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Number of properties | property 17    
Assets Impaired During The Twelve Months Ended December 31 2022 | Discount Rate and Capitalization Rate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Number of properties | property 1    
Assets Impaired During The Twelve Months Ended December 31 2022 | Weighted Average | Discount Rate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Alternative investment, measurement input 0.085    
Assets Impaired During The Twelve Months Ended December 31 2022 | Weighted Average | Capitalization Rate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Alternative investment, measurement input 0.080    
Assets Impaired During The Twelve Months Ended December 31 2021      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Impairment, long-lived asset, held-for-use   $ 49,900  
Impairment of properties held for sale   0  
Impairment of properties disposed of   $ 0  
Assets Impaired During The Twelve Months Ended December 31 2021 | Estimated Sales Price      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Number of properties | property   10