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Assets Measured at Fair Value on Recurring Basis for Pension Plan (Detail) - Pension Plans - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value $ 126,098 $ 152,006 $ 137,406
Mutual Fund      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 114,978 144,239  
Mutual Fund | Equity Funds      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 67,332 86,356  
Mutual Fund | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 47,646 57,883  
Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 2,598 912  
Mutual Fund Including Cash And Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 117,576 145,151  
Real Estate Funds      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 8,522 6,855  
Fair Value, Inputs, Level 1 | Mutual Fund      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 114,978 144,239  
Fair Value, Inputs, Level 1 | Mutual Fund | Equity Funds      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 67,332 86,356  
Fair Value, Inputs, Level 1 | Mutual Fund | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 47,646 57,883  
Fair Value, Inputs, Level 1 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value 2,598 912  
Fair Value, Inputs, Level 1 | Mutual Fund Including Cash And Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets measured at fair value $ 117,576 $ 145,151