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Description of Business and Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) a | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jan. 01, 2024
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Total assets | $ 6,944,328 | $ 6,771,125 | $ 6,821,757 |
Liabilities | $ 2,761,163 | $ 2,776,090 |  |
Area of land | a | 56 |  |  |
Payment for acquisition, land, held-for-use | $ 4,200 |  |  |
Investment tax credit | 1,400 |  |  |
Government assistance, award amount | $ 407,000 |  |  |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent |  |
Long term finance lease liabilities | $ 122,700 | $ 47,800 |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |
Unbilled receivables | $ 210,100 | $ 260,800 |  |
Contract with customer, liability | 95,600 | 135,500 |  |
Contract with customer, liability, current | 59,656 | 71,117 |  |
Contract with customer, liability, revenue recognized | 66,000 | $ 66,900 | $ 101,200 |
Test Equipment |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Useful life |  | 5 years |  | 7 years
Land |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Land acquired | $ 36,900 |  |  |
Minimum |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Remaining lease term | 1 year |  |  |
Revenue, expected timing of satisfaction, period | 1 year |  |  |
Maximum |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Remaining lease term | 81 years |  |  |
Revenue, expected timing of satisfaction, period | 5 years |  |  |
First Largest Customer | Net Sales | Customer Concentration Risk |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk (as a percent) | 30.80% | 27.70% | 20.60% |
Second Largest Customer | Net Sales | Customer Concentration Risk |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk (as a percent) | 10.20% |  | 10.10% |
Variable Interest Entity, Primary Beneficiary |  |  |  |
Schedule of Significant Accounting Policies [Line Items] |  |  |  |
Ownership percentage | 40.00% |  |  |
Total assets | $ 17,300 |  |  |
Liabilities | $ 100 |  |  |

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