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Secured Debt - Summary of Secured Debt (Parenthetical) (Detail) - First National Loan - CDOR
Mar. 31, 2023
Dec. 31, 2022
Burlington    
Line of Credit Facility [Line Items]    
Interest rate swap rate 4.02% 4.02%
Cambridge    
Line of Credit Facility [Line Items]    
Interest rate swap rate 3.84% 3.84%
North York    
Line of Credit Facility [Line Items]    
Interest rate swap rate 3.79% 3.79%