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Income Taxes - Additional Information (Detail) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 22, 2017 | Dec. 21, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Line Items] |  |  |  |  |  |
Tax cuts and jobs act of 2017, incomplete accounting, provisional income tax expense |  |  |  | $ 19,997,000 | $ 20,153,000 |
U.S. federal statutory corporate tax rate | 21.00% | 35.00% | 21.00% | 21.00% | 34.00% |
Tax cuts and jobs act of 2017, incomplete accounting, change in tax rate, deferred tax balances, income tax expense |  |  |  | $ 4,950,000 |  |
Tax cuts and jobs act of 2017, incomplete accounting, provisional income tax expense related to onetime transition tax liability of foreign subsidiaries |  |  |  | 24,625,000 |  |
Tax cuts and jobs act of 2017, incomplete accounting, benefit included in provision for income taxes to offset one-time transition tax related to previous deferred tax liability that existed for undistributed foreign earnings that were not permanently reinvested |  |  |  |  | $ 9,578,000 |
Undistributed earnings offsetting with dividend received deduction percent |  |  | 100.00% |  |  |
Income tax holiday, amount of corporate income tax savings realized |  |  | $ 21,645,000 | 16,220,000 | 34,028,000 |
Total unrecognized tax benefits |  |  | $ 3,795,000 | 2,819,000 | $ 3,812,000 | $ 3,877,000
Macedonia |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Income tax holiday, description |  |  | The government of Macedonia granted the Company a tax holiday that released the Company from the obligation to pay corporate income taxes for a ten year period, subject to certain limitations. |  |  |
Income tax holiday, period |  |  | 10 years |  |  |
Income tax holiday, amount of corporate income tax savings realized |  |  | $ 0 | $ 0 |  |
Preferred Financing |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Net operating loss carryforward annual limitation |  |  | 591,000 |  |  |
Net operating loss carryforward expected to expire |  |  | 0 |  |  |
Net operating loss expired |  |  | $ 19,349,000 |  |  |
U.S. State | Earliest Tax Year |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, year of expiration |  |  | 2020 |  |  |
U.S. State | Latest Tax Year |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, year of expiration |  |  | 2039 |  |  |
Non-U.S. Subsidiaries |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, amount |  |  | $ 122,818,000 |  |  |
Operating loss valuation allowance |  |  | 110,012,000 |  |  |
Foreign Jurisdictions |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, amount |  |  | $ 13,153,000 |  |  |
Foreign Jurisdictions | Earliest Tax Year |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, year of expiration |  |  | 2020 |  |  |
Foreign Jurisdictions | Latest Tax Year |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, year of expiration |  |  | 2024 |  |  |
Indefinite |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Operating loss carryforward, amount |  |  | $ 109,665,000 |  |  |
Net operating loss carryforward, year of expiration |  |  | no expiration date |  |  |

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