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Business Segments and Customer Information - Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues: | $ 860,488 | $ 669,448 | $ 481,384
Operating income (loss): | 87,996 | 53,604 | (2,705)
Depreciation and amortization expense: | 21,380 | 21,957 | 21,053
Assets held-for-sale | 93,002 | 110,939 |
Total assets | 1,350,338 | 999,789 |
Aviation |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues: | 544,020 | 408,112 | 247,852
Depreciation and amortization expense: | 16,080 | 13,174 | 11,374
Fleet |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues: | 316,468 | 261,336 | 233,532
Depreciation and amortization expense: | 5,300 | 8,783 | 9,679
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss): | 87,996 | 53,604 | (2,705)
Capital expenditures: | 18,934 | 12,324 | 9,980
Total assets | 1,350,338 | 999,789 |
Operating Segments | Aviation |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss): | 71,168 | 36,416 | (14,373)
Capital expenditures: | 16,467 | 5,961 | 7,468
Total assets | 950,143 | 637,615 |
Operating Segments | Fleet |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss): | 31,257 | 23,911 | 20,426
Capital expenditures: | 2,198 | 5,502 | 1,669
Total assets | 274,382 | 218,138 |
Operating Segments | Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 32,811 | 33,097 |
Corporate/unallocated expenses |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss): | (14,429) | (6,723) | (8,758)
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures: | $ 269 | $ 861 | $ 843

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