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Acquisition of Subsidiaries (Details 1) (USD $)
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1 Months Ended | 12 Months Ended | |||||
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Dec. 31, 2013
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Dec. 31, 2012
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Jul. 31, 2013
American Jets, Inc
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Dec. 31, 2012
Sundance Helicopters, Inc
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Dec. 31, 2013
Sundance Helicopters, Inc
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Dec. 31, 2013
Sundance Helicopters, Inc
Adjustments
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Dec. 31, 2012
Sundance Helicopters, Inc
Allocation at December 31, 2012
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| Business Acquisition [Line Items] | |||||||
| Cash purchase price | $ 1,700,000 | $ 46,300,000 | |||||
| Estimate of increase to purchase price for adjustments | 906,000 | 843,000 | |||||
| Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] | |||||||
| Aircraft | 34,420,000 | 34,420,000 | |||||
| Amortizable intangible assets | 5,142,000 | (593,000) | 5,735,000 | ||||
| Goodwill | 128,121,000 | 120,029,000 | 1,400,000 | 4,174,000 | 665,000 | 3,509,000 | |
| Other equipment | 901,000 | 901,000 | |||||
| Deferred tax asset | 1,736,000 | 450,000 | 1,286,000 | ||||
| Working capital accounts, net | 794,000 | (585,000) | 1,379,000 | ||||
| Purchase price | $ 47,167,000 | $ (63,000) | $ 47,230,000 | ||||