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Business Segment Information - Schedule of Reportable Segment (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2025 | Sep. 28, 2024 | Sep. 27, 2025 | Sep. 28, 2024
Segment Reporting Information [Line Items] |  |  |  |
Net Revenues | $ 212,558,000 | $ 201,412,000 | $ 608,932,000 | $ 589,259,000
Cost of Sales | 156,083,000 | 148,736,000 | 447,122,000 | 438,401,000
Selling, General and Administrative Expenses | 36,267,000 | 35,486,000 | 106,820,000 | 104,498,000
Restructuring Charges | 583,000 | 1,924,000 | 1,617,000 | 4,548,000
Segment Operating Income | 33,025,000 | 27,199,000 | 92,056,000 | 76,401,000
Operating (Loss) Income | (80,050,000) | 15,266,000 | (46,302,000) | 41,812,000
Interest Expense | (2,927,000) | (3,829,000) | (9,198,000) | (11,687,000)
Other Income | 0 | 0 | 1,746,000 | 0
(Loss) Income Before Taxes | (82,977,000) | 11,437,000 | (53,754,000) | 30,125,000
Corporate Administration |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Corporate general and administrative expenses | (113,075,000) | (11,933,000) | (138,358,000) | (34,589,000)
Electronic Systems | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Revenues | 123,082,000 | 115,412,000 | 343,056,000 | 324,391,000
Cost of Sales | 90,477,000 | 84,468,000 | 248,972,000 | 235,827,000
Selling, General and Administrative Expenses | 11,436,000 | 11,943,000 | 33,630,000 | 33,317,000
Restructuring Charges | 71,000 | 91,000 | 242,000 | 562,000
Segment Operating Income | 21,098,000 | 18,910,000 | 60,212,000 | 54,685,000
Structural Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring Charges |  | 0 |  | 900,000
Structural Systems | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Revenues | 89,476,000 | 86,000,000 | 265,876,000 | 264,868,000
Cost of Sales | 65,606,000 | 64,268,000 | 198,150,000 | 201,719,000
Selling, General and Administrative Expenses | 11,431,000 | 11,610,000 | 34,507,000 | 36,590,000
Restructuring Charges | 512,000 | 1,833,000 | 1,375,000 | 4,843,000
Segment Operating Income | $ 11,927,000 | $ 8,289,000 | $ 31,844,000 | $ 21,716,000

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