v2.4.0.8

Summary of Significant Accounting Policies (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 Aircraft | Dec. 31, 2012
Summary of Significant Accounting Policies [Abstract] |  |
Short-term money market funds |  | $ 625,000
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] |  |
Estimated useful economic life of the STC (in years) | 5 years |
Amortization method used for intangible assets | straight-line method |
Future amortization expense for customer lists and other customer relationships [Abstract] |  |
2014 | 4,363,000 |
2015 | 4,361,000 |
2016 | 4,099,000 |
2017 | 4,048,000 |
2018 | 4,048,000 |
Indefinite-lived intangible assets | 24,500,000 |
Long-lived assets held for sale [Abstract] |  |
Number of aircraft classified as current assets held for sale | 6 |
Goodwill [Line Items] |  |
Goodwill | 128,121,000 | 120,029,000
Air Medical Services |  |
Goodwill [Line Items] |  |
Goodwill | 117,466,000 |
United Rotorcraft |  |
Goodwill [Line Items] |  |
Goodwill | 495,000 |
Tourism |  |
Goodwill [Line Items] |  |
Goodwill | $ 10,160,000 |
Minimum |  |
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] |  |
Estimated useful economic life of the STC (in years) | 5 years |
Maximum |  |
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] |  |
Estimated useful economic life of the STC (in years) | 16 years |
Buildings, including hangars |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 40 years |
Estimated residual value (in hundredths) | 10.00% |
Helicopters, including medical equipment | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 8 years |
Estimated residual value (in hundredths) | 10.00% |
Helicopters, including medical equipment | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 25 years |
Estimated residual value (in hundredths) | 25.00% |
Ground support equipment and rotables | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 5 years |
Estimated residual value (in hundredths) | 0.00% |
Ground support equipment and rotables | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 10 years |
Estimated residual value (in hundredths) | 10.00% |
Furniture and office equipment |  |
Property, Plant and Equipment [Line Items] |  |
Estimated residual value (in hundredths) | 0.00% |
Furniture and office equipment | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 3 years |
Furniture and office equipment | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Useful life (in years) | 10 years |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost. + References No definition available. + Details
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