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

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Period Type:	instant