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Senior Debt - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 30, 2024 | Sep. 30, 2021 | Sep. 30, 2020
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Repayment of outstanding debt | $ 3,000 |  |  |  |  |
Credit facility principal payments 2020 | 2,500 |  |  |  |  |
Credit facility principal payments 2021 | 3,100 |  |  |  |  |
Credit facility principal payments 2022 | 3,700 |  |  |  |  |
Credit facility principal payments 2023 | 4,500 |  |  |  |  |
Credit facility principal payments 2024 | $ 53,500 |  |  |  |  |
Weighted average interest rate on outstanding borrowings | 3.80% | 5.27% |  |  |  |
Fair value of interest rate swap | $ 0 |  |  |  |  |
Interest rate swap, fair value, asset |  | $ 500 |  |  |  |
Debt discount expensed | 1,060 | 1,143 | $ 1,033 |  |  |
Scenario Forecast [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  | 3.25% | 3.50% | 3.75%
Other Income (Expense), Net [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Change in fair value of interest rate swap recognized as income | $ 200 |  |  |  |  |
Cross Currency Interest Rate Contract [Member] | Minimum [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Cross Currency Interest Rate Contract [Member] | Maximum [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |  |
Federal Funds Rate [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |
One-Month LIBOR [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Base Rate [Member] | Minimum [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Base Rate [Member] | Maximum [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |  |
Amended and Restated Credit Agreement [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Debt instrument extended maturity date | Jun. 11, 2024 |  |  |  |  |
Customary closing fees | $ 1,100 |  |  |  |  |
Debt discount expensed | 400 |  |  |  |  |
Credit Agreement [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Unused credit availability under credit facility | 82,300 | 50,700 |  |  |  |
Revolving Credit Loan [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Repayments on revolving credit lines | 7,600 |  |  |  |  |
Revolving Credit Loan | 18,500 |  |  |  |  |
Revolving Credit Loan [Member] | Amended and Restated Credit Agreement [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Aggregate principal amount outstanding under the credit facilities | 140,000 |  |  |  |  |
Term Loan [Member] | Amended and Restated Credit Agreement [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Increased credit facility commitment for either revolving credit facility or term loan facility | 50,000 |  |  |  |  |
Letters of Credit [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Aggregate principal amount outstanding under the credit facilities | 11,000 | $ 29,300 |  |  |  |
Bank Guarantees [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Bank guarantee issuance under bilateral lines and collateral | 50,000 |  |  |  |  |
Revolving Credit Loan | 16,600 |  |  |  |  |
Netherlands Facility [Member] | Euro-Denominated Bank Guarantee [Member] |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Revolving Credit Loan | $ 3,400 |  |  |  |  |

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