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Aircraft and Property, Plant and Equipment - Schedule of Property, Plant and Equipment Net (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | $ 140,428 | $ 126,199 |
| Less: Accumulated depreciation and amortization | (19,793) | (16,817) |
| Property, plant, and equipment, net | 120,635 | 109,382 |
| Land and land improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | 308 | 308 |
| Buildings | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | 7,926 | 7,597 |
| Vehicles and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | 29,500 | 29,598 |
| Deferred overhauls, net | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | 86,768 | 68,773 |
| Construction-in-progress | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant, and equipment, gross | $ 15,926 | $ 19,923 |