v3.7.0.1

Segment Information - Schedule of Net Revenue Attributable to Insurance, Medicare, Medicaid, and Self-Pay as Percentage of Net Air Medical Revenues (Detail) - Air Medical [Member] | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Percentage of net Air Medical revenues | 70.00% | 66.00%
Medicare [Member] |  |
Segment Reporting Information [Line Items] |  |
Percentage of net Air Medical revenues | 20.00% | 19.00%
Medicaid [Member] |  |
Segment Reporting Information [Line Items] |  |
Percentage of net Air Medical revenues | 10.00% | 15.00%
Self Pay [Member] |  |
Segment Reporting Information [Line Items] |  |
Percentage of net Air Medical revenues | 0.00% | 0.00%

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- Definition Revenue by payor percentage + References No definition available. + Details
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Namespace Prefix: | phii_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |