Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS - Assets with definite lives (Details)

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INTANGIBLE ASSETS - Assets with definite lives (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Intangible assets    
Total intangible assets with definite lives $ 11,139 $ 11,656
Flight manuals    
Intangible assets    
Useful life (in years) 10 years  
Total intangible assets with definite lives $ 543  
Asset Management Solutions | Qwest | Customer relationships    
Intangible assets    
Useful life (in years) 10 years  
Total intangible assets with definite lives $ 4,677 5,163
TechOps | ALGS | Customer relationships    
Intangible assets    
Useful life (in years) 10 years  
Total intangible assets with definite lives $ 20 30
TechOps | ACS | Customer relationships    
Intangible assets    
Useful life (in years) 10 years  
Total intangible assets with definite lives $ 928 1,033
TechOps | ACT | Customer relationships    
Intangible assets    
Useful life (in years) 10 years  
Total intangible assets with definite lives $ 4,971 $ 5,430