Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Fair Value Measures - Assets at Fair Value Measured on a Non-recurring Basis (Details)

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Orion Office REIT, Fair Value Measures - Assets at Fair Value Measured on a Non-recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of properties held and used $ 5,402 $ 50,857
Assets of properties held for sale   2,502
Assets   53,359
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of properties held and used 0 0
Assets of properties held for sale   0
Assets   0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of properties held and used 0 38,900
Assets of properties held for sale   2,502
Assets   41,402
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of properties held and used $ 5,402 11,957
Assets of properties held for sale   0
Assets   $ 11,957