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Commitments and Contingencies Payments Related to Commitments to Purchase (Tables)
6 Months Ended
Jun. 30, 2020
Payments Related to Commitments to Purchase [Abstract]  
Long-term Purchase Commitment [Table Text Block]
The Company's contractual purchase commitments consist primarily of aircraft and engine acquisitions. The total future commitments are as follows:
(in thousands)
June 30, 2020
Remaining in 2020
$
126,141

2021
37,900

2022
21,000

Total commitments
$
185,041