Quarterly report [Sections 13 or 15(d)]

Segment Information - Schedule of Segment Reporting Information (Details)

v3.26.1
Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 04, 2026
Mar. 29, 2025
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting Information        
Sales $ 230,619 $ 205,936 $ 862,128 $ 795,426
Cost of Products Sold 155,486 145,087    
Operating Profit (Loss) 27,230 13,137    
Deductions from Segment Measure of Operating Profit:        
Interest Expense, Net of Interest Income 2,336 3,150    
Income Before Income Taxes 24,785 10,174    
Aerospace        
Segment Reporting Information        
Sales 213,820 191,375 797,319 706,684
Test Systems Segment        
Segment Reporting Information        
Sales 16,799 14,561 $ 64,809 $ 88,742
Operating Segments, Excluding Intersegment Elimination | Aerospace        
Segment Reporting Information        
Sales 213,843 191,388    
Operating Segments, Excluding Intersegment Elimination | Test Systems Segment        
Segment Reporting Information        
Sales 16,824 14,592    
Less Inter-segment Sales | Aerospace        
Segment Reporting Information        
Sales (23) (13)    
Less Inter-segment Sales | Test Systems Segment        
Segment Reporting Information        
Sales (25) (31)    
Operating Segments        
Segment Reporting Information        
Operating Profit (Loss) $ 35,735 $ 20,041    
Operating Margins 15.50% 9.70%    
Operating Segments | Aerospace        
Segment Reporting Information        
Sales $ 213,820 $ 191,375    
Cost of Products Sold $ 143,127 $ 132,892    
Cost of Products Sold Margins 66.90% 69.40%    
Other Segment Items $ 35,361 $ 36,219    
Operating Profit (Loss) $ 35,332 $ 22,264    
Operating Margins 16.50% 11.60%    
Operating Segments | Test Systems Segment        
Segment Reporting Information        
Sales $ 16,799 $ 14,561    
Cost of Products Sold $ 12,359 $ 12,195    
Cost of Products Sold Margins 73.60% 83.80%    
Other Segment Items $ 4,037 $ 4,589    
Operating Profit (Loss) $ 403 $ (2,223)    
Operating Margins 2.40% (15.30%)    
Corporate Expenses and Other        
Deductions from Segment Measure of Operating Profit:        
Corporate Expenses and Other $ 8,614 $ 6,717