Unsecured Credit Agreements - Summary of Debt Issuance Cost Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Debt Disclosure [Abstract]
Debt issuance costs amortization	$ 986	$ 856

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	debit
Period Type:	duration