Annual report pursuant to Section 13 and 15(d)

REVENUE - Summary of Revenue Disaggregated by Market (Details)

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REVENUE - Summary of Revenue Disaggregated by Market (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]          
Sales $ 195,292 $ 158,153 $ 689,206 $ 534,894 $ 444,908
Aerospace Total          
Disaggregation of Revenue [Line Items]          
Sales     604,830 461,196 365,238
Commercial Transport          
Disaggregation of Revenue [Line Items]          
Sales     432,199 314,564 201,990
Military Aircraft          
Disaggregation of Revenue [Line Items]          
Sales     61,617 54,534 70,312
General Aviation          
Disaggregation of Revenue [Line Items]          
Sales     80,842 63,395 56,673
Other          
Disaggregation of Revenue [Line Items]          
Sales     30,172 28,703 36,263
Test Systems          
Disaggregation of Revenue [Line Items]          
Sales     84,376 73,698 79,670
Government & Defense          
Disaggregation of Revenue [Line Items]          
Sales     $ 84,376 $ 73,698 $ 79,670