Annual report pursuant to Section 13 and 15(d)

BUSINESS COMBINATIONS - Qwest Intangible assets (Details)

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BUSINESS COMBINATIONS - Qwest Intangible assets (Details)
$ in Thousands
Jun. 10, 2019
USD ($)
FAA part 145 certificate (indefinite lived) | Qwest Air Parts, Inc  
Acquired Indefinite-lived Intangible Assets [Line Items]  
Fair value of indefinite intangible assets acquired $ 724