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Schedule I - Parent Company Only - Commitments, Contingencies and Guarantees - Additional Information (Detail) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020 | Apr. 19, 2019 | Apr. 08, 2019 | May 31, 2017 | Jul. 10, 2015 | Mar. 13, 2015
--- | --- | --- | --- | --- | --- | --- | ---
3.70% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  |  |  | $ 28,200,000
Stated interest rate |  |  |  |  |  |  | 3.70%
Outstanding balance of the secured loan arrangements | $ 0 | $ 0 |  |  |  |  |
3.44% loan |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Outstanding balance of the secured loan arrangements | 0 | 4,000,000 |  |  |  |  |
3.44% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  | $ 29,900,000 |  |
Stated interest rate |  |  |  |  | 3.44% |  |
Outstanding balance of the secured loan arrangements | 0 | 4,000,000 |  |  |  |  |
Book value of the fixed assets pledged |  | 800,000 |  |  |  |  |
3.77% loan |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Outstanding balance of the secured loan arrangements | 5,900,000 | 9,600,000 |  |  |  |  |
3.77% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  | $ 15,000,000 |  |  |
Stated interest rate |  |  |  | 3.77% |  |  |
Outstanding balance of the secured loan arrangements | 5,900,000 | 9,600,000 |  |  |  |  |
Book value of the fixed assets pledged | 100,000 | 1,200,000 |  |  |  |  |
3.89% Loan |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Outstanding balance of the secured loan arrangements | 3,800,000 | 6,300,000 |  |  |  |  |
3.89% Loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  | $ 10,000,000 |  |  |  |
Stated interest rate |  |  | 3.89% |  |  |  |
Outstanding balance of the secured loan arrangements | 3,800,000 | 6,300,000 |  |  |  |  |
Book value of the fixed assets pledged | 1,000,000 | 2,700,000 |  |  |  |  |
Parent Company | 3.70% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  |  |  | $ 28,200,000
Stated interest rate |  |  |  |  |  |  | 3.70%
Outstanding balance of the secured loan arrangements | 0 | 0 |  |  |  |  |
Parent Company | 8.375% Senior Notes | Guarantee Obligations |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  | 8.375% |
Principal amount of notes |  |  |  |  |  | $ 240,000,000 |
Parent Company | 3.44% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  | $ 29,900,000 |  |
Stated interest rate |  |  |  |  | 3.44% |  |
Book value of the fixed assets pledged |  | 800,000 |  |  |  |  |
Parent Company | 3.77% loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  | $ 15,000,000 |  |  |
Stated interest rate |  |  |  | 3.77% |  |  |
Book value of the fixed assets pledged | 100,000 | 1,200,000 |  |  |  |  |
Parent Company | 3.89% Loan | Secured Debt |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Debt instrument gross amount |  |  | $ 10,000,000 |  |  |  |
Stated interest rate |  |  | 3.89% |  |  |  |
Book value of the fixed assets pledged | $ 1,000,000 | $ 2,700,000 |  |  |  |  |

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