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v3.25.1

Debt - Additional Information (Detail) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Aug. 27, 2024 Agreement | Jun. 24, 2022 USD ($) | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 659,283,000 | $ 625,439,000
Debt instrument maturity dates description |  |  | The notes had original maturities of seven to 12 years with mandatory principal payments beginning four, five and six years after issuance |
Delayed Draw Term Loan Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  |  | $ 88,750,000 |
Term loan principal repaid |  |  | 11,250,000 |
Multi Currency Revolving Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding borrowings, including term loan |  |  | 346,500,000 |
Letters of Credit Outstanding |  |  | 5,318,000 |
Unused Revolving credit |  |  | 86,932,000 |
Unrestricted retained earnings |  |  | 263,063,000 | $ 251,953,000
Unsecured Private Placement Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 311,781,000 |
Unsecured Private Placement Notes [Member] | Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument interest rate percentage |  |  | 2.30% |
Maturity Dates |  |  | 7 years |
Unsecured Private Placement Notes [Member] | Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument interest rate percentage |  |  | 3.95% |
Maturity Dates |  |  | 12 years |
Note Purchase Agreements [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of agreements for amendment | Agreement | 2 |  |  |
CIC Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  |  | $ 8,700,000 |
CIC Credit Agreement [Member] | Letter of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  |  | 8,694,000 |
Multi-Currency Credit Facility with Syndicate of Banks [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  | $ 450,000,000 |  |
Committed multi-currency credit facility, maturity date |  | Jun. 24, 2027 |  |
Multi-Currency Credit Facility with Syndicate of Banks [Member] | Multi-Currency Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  | $ 350,000,000 |  |
Multi-Currency Credit Facility with Syndicate of Banks [Member] | Delayed Draw Term Loan Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity |  | $ 100,000,000 |  |
Debt of foreign subsidiaries Unsecured bank debt and Term Loan, foreign currency [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 1,002,000 |

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