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Aggregate Consolidated Scheduled Debt Repayment (Parenthetical) (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]    
Line of credit borrowings $ 271,900,000 $ 236,200,000
New Revolving Credit Facility Agreement    
Schedule Of Equity Method Investments [Line Items]    
Outstanding borrowing $ 375,000,000  
Maturity date Jul. 31, 2025