Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Segment Reporting Information (Details)

v3.22.2.2
Segment Information - Summary of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 01, 2022
Oct. 02, 2021
Dec. 31, 2021
Segment Reporting Information          
Sales $ 131,438 $ 111,841 $ 376,741 $ 328,856  
Segment Measure of Operating Loss and Margins          
Total operating loss (14,314) (4,498) (26,877) (19,930)  
Deductions from Segment Measure of Operating Loss          
Net Gain on Sale of Business 0 0 (11,284) 0  
Interest Expense, Net of Interest Income 2,519 1,795 5,812 5,252  
Loss Before Income Taxes (17,260) (6,839) (22,585) (26,809)  
Total Assets 598,887   598,887   $ 609,138
Customer Accommodation Dispute          
Segment Reporting Information          
Litigation settlement, customer accommodation 2,100        
Litigation          
Segment Reporting Information          
Litigation settlement, customer accommodation     2,000    
Aerospace          
Segment Reporting Information          
Sales 112,177 95,766 322,861 266,402  
Test Systems          
Segment Reporting Information          
Sales 19,261 16,075 53,880 62,454  
Operating Segments          
Segment Measure of Operating Loss and Margins          
Total operating loss $ (9,171) $ (284) $ (11,210) $ (8,310)  
Operating margins, percentage (7.00%) (0.30%) (3.00%) (2.50%)  
Operating Segments | Aerospace          
Segment Reporting Information          
Sales $ 112,177 $ 95,775 $ 322,871 $ 266,425  
Segment Measure of Operating Loss and Margins          
Total operating loss $ (6,859) $ 1,917 $ (7,085) $ (6,352)  
Operating margins, percentage (6.10%) 2.00% (2.20%) (2.40%)  
Deductions from Segment Measure of Operating Loss          
Total Assets $ 478,385   $ 478,385   458,334
Operating Segments | Test Systems          
Segment Reporting Information          
Sales 19,261 $ 16,128 53,899 $ 62,811  
Segment Measure of Operating Loss and Margins          
Total operating loss $ (2,312) $ (2,201) $ (4,125) $ (1,958)  
Operating margins, percentage (12.00%) (13.70%) (7.70%) (3.10%)  
Deductions from Segment Measure of Operating Loss          
Total Assets $ 108,473   $ 108,473   105,335
Less Inter-segment Sales | Aerospace          
Segment Reporting Information          
Sales 0 $ (9) (10) $ (23)  
Less Inter-segment Sales | Test Systems          
Segment Reporting Information          
Sales 0 (53) (19) (357)  
Corporate Expenses and Other          
Deductions from Segment Measure of Operating Loss          
Corporate Expenses and Other 5,570 $ 4,760 16,847 $ 13,247  
Total Assets $ 12,029   $ 12,029   $ 45,469