Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Derivative and Hedging Activities - Narrative (Details)

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Orion Office REIT, Derivative and Hedging Activities - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
derivative_instrument
Dec. 31, 2022
USD ($)
derivative_instrument
Dec. 31, 2021
USD ($)
Nov. 13, 2023
USD ($)
Dec. 01, 2022
USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Unrealized gain on interest rate derivatives $ 127 $ 7,802 $ 209    
Reclassification of pervious unrealized gain (losses) on interest rate derivatives 6,699 1,793 (90)    
Amount to be reclassified in next twelve months (less than) 100        
Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount 60,000 175,000      
Unrealized gain on interest rate derivatives 100 7,800 200    
Reclassification of pervious unrealized gain (losses) on interest rate derivatives $ 6,700 $ 1,800 $ (100)    
Not Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of interest rate swaps not designated as qualifying hedging relationships | derivative_instrument 0 0      
Interest rate swaps          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount   $ 175,000     $ 175,000
Interest rate swaps | Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount   $ 175,000      
Interest Rate Collar on $25.0 Million | Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount       $ 25,000  
Interest Rate Collar on $25.0 Million | Designated as Hedging Instrument | Minimum          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Benchmark rate (percent)       5.50%  
Interest Rate Collar on $25.0 Million | Designated as Hedging Instrument | Maximum          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Benchmark rate (percent)       4.20%  
Interest Rate Collar on $35.0 Million | Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount       $ 35,000  
Interest Rate Collar on $35.0 Million | Designated as Hedging Instrument | Minimum          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Benchmark rate (percent)       5.50%  
Interest Rate Collar on $35.0 Million | Designated as Hedging Instrument | Maximum          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Benchmark rate (percent)       4.035%