Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Segment Reporting Information (Details)

v3.20.2
Segment Information - Summary of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Dec. 31, 2019
Segment Reporting Information          
Sales $ 123,694 $ 189,098 $ 281,278 $ 397,272  
Segment Measure of Operating (Loss) Profit and Margins          
Total Operating Profit (18,679) 10,573 (86,235) 33,454  
Additions/Deductions from Segment Measure of Operating (Loss) Profit          
Gain on Sale of Business 0 0 0 80,133  
Interest Expense, Net of Interest Income 1,983 1,225 3,316 3,029  
(Loss) Income Before Income Taxes (24,451) 8,830 (93,728) 109,825  
Total Assets 658,526   658,526   $ 782,716
Aerospace Segment          
Segment Reporting Information          
Sales 102,573 174,287 243,643 362,788  
Test Systems Segment          
Segment Reporting Information          
Sales 21,121 14,811 37,635 34,484  
Operating Segments          
Segment Measure of Operating (Loss) Profit and Margins          
Total Operating Profit $ (14,478) $ 14,298 $ (76,901) $ 42,251  
Operating margins, percentage (11.70%) 7.60% (27.30%) 10.60%  
Operating Segments | Aerospace Segment          
Segment Reporting Information          
Sales $ 102,597 $ 174,292 $ 243,734 $ 362,793  
Segment Measure of Operating (Loss) Profit and Margins          
Total Operating Profit $ (17,090) $ 14,392 $ (80,235) $ 40,160  
Operating margins, percentage (16.70%) 8.30% (32.90%) 11.10%  
Additions/Deductions from Segment Measure of Operating (Loss) Profit          
Total Assets $ 501,536   $ 501,536   629,371
Operating Segments | Test Systems Segment          
Segment Reporting Information          
Sales 21,432 $ 14,925 37,985 $ 34,649  
Segment Measure of Operating (Loss) Profit and Margins          
Total Operating Profit $ 2,612 $ (94) $ 3,334 $ 2,091  
Operating margins, percentage 12.40% (0.60%) 8.90% 6.10%  
Additions/Deductions from Segment Measure of Operating (Loss) Profit          
Total Assets $ 104,392   $ 104,392   110,994
Less Intersegment Sales | Aerospace Segment          
Segment Reporting Information          
Sales (24) $ (5) (91) $ (5)  
Less Intersegment Sales | Test Systems Segment          
Segment Reporting Information          
Sales (311) (114) (350) (165)  
Corporate Expenses and Other          
Additions/Deductions from Segment Measure of Operating (Loss) Profit          
Corporate Expenses and Other 7,990 $ 4,243 13,511 $ 9,530  
Total Assets $ 52,598   $ 52,598   $ 42,351