3.10.0.1 html 229 244 1 false 59 0 false 9 false false R1.htm 0001000 - Document - Document and Entity Information Sheet http://www.phihelico.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://www.phihelico.com/role/CondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 1001501 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.phihelico.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - Condensed Consolidated Statements of Operations (Unaudited) Sheet http://www.phihelico.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited Condensed Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 1003000 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) Sheet http://www.phihelico.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeLossUnaudited Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) Statements 5 false false R6.htm 1004000 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Sheet http://www.phihelico.com/role/CondensedConsolidatedStatementsOfShareholdersEquityUnaudited Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Statements 6 false false R7.htm 1005000 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.phihelico.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 7 false false R8.htm 2101100 - Disclosure - Basis of Presentation Sheet http://www.phihelico.com/role/BasisOfPresentation Basis of Presentation Notes 8 false false R9.htm 2102100 - Disclosure - Investments Sheet http://www.phihelico.com/role/Investments Investments Notes 9 false false R10.htm 2103100 - Disclosure - Valuation Accounts Sheet http://www.phihelico.com/role/ValuationAccounts Valuation Accounts Notes 10 false false R11.htm 2104100 - Disclosure - Fair Value Measurements Sheet http://www.phihelico.com/role/FairValueMeasurements Fair Value Measurements Notes 11 false false R12.htm 2105100 - Disclosure - Debt Sheet http://www.phihelico.com/role/Debt Debt Notes 12 false false R13.htm 2106100 - Disclosure - Earnings Per Share Sheet http://www.phihelico.com/role/EarningsPerShare Earnings Per Share Notes 13 false false R14.htm 2107100 - Disclosure - Stock-Based Compensation Sheet http://www.phihelico.com/role/StockBasedCompensation Stock-Based Compensation Notes 14 false false R15.htm 2108100 - Disclosure - Asset Disposals Sheet http://www.phihelico.com/role/AssetDisposals Asset Disposals Notes 15 false false R16.htm 2109100 - Disclosure - Commitments and Contingencies Sheet http://www.phihelico.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 16 false false R17.htm 2110100 - Disclosure - Goodwill Sheet http://www.phihelico.com/role/Goodwill Goodwill Notes 17 false false R18.htm 2111100 - Disclosure - Other Intangible Assets Sheet http://www.phihelico.com/role/OtherIntangibleAssets Other Intangible Assets Notes 18 false false R19.htm 2112100 - Disclosure - Segment Information Sheet http://www.phihelico.com/role/SegmentInformation Segment Information Notes 19 false false R20.htm 2113100 - Disclosure - Investment in Variable Interest Entity Sheet http://www.phihelico.com/role/InvestmentInVariableInterestEntity Investment in Variable Interest Entity Notes 20 false false R21.htm 2114100 - Disclosure - Other Comprehensive Income Sheet http://www.phihelico.com/role/OtherComprehensiveIncome Other Comprehensive Income Notes 21 false false R22.htm 2115100 - Disclosure - Condensed Consolidating Financial Information Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformation Condensed Consolidating Financial Information Notes 22 false false R23.htm 2201201 - Disclosure - Basis of Presentation (Policies) Sheet http://www.phihelico.com/role/BasisOfPresentationPolicies Basis of Presentation (Policies) Policies 23 false false R24.htm 2301302 - Disclosure - Basis of Presentation (Tables) Sheet http://www.phihelico.com/role/BasisOfPresentationTables Basis of Presentation (Tables) Tables http://www.phihelico.com/role/BasisOfPresentation 24 false false R25.htm 2302301 - Disclosure - Investments (Tables) Sheet http://www.phihelico.com/role/InvestmentsTables Investments (Tables) Tables http://www.phihelico.com/role/Investments 25 false false R26.htm 2303301 - Disclosure - Valuation Accounts (Tables) Sheet http://www.phihelico.com/role/ValuationAccountsTables Valuation Accounts (Tables) Tables http://www.phihelico.com/role/ValuationAccounts 26 false false R27.htm 2304301 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.phihelico.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.phihelico.com/role/FairValueMeasurements 27 false false R28.htm 2305301 - Disclosure - Debt (Tables) Sheet http://www.phihelico.com/role/DebtTables Debt (Tables) Tables http://www.phihelico.com/role/Debt 28 false false R29.htm 2306301 - Disclosure - Earnings Per Share (Tables) Sheet http://www.phihelico.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://www.phihelico.com/role/EarningsPerShare 29 false false R30.htm 2307301 - Disclosure - Stock-Based Compensation (Tables) Sheet http://www.phihelico.com/role/StockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://www.phihelico.com/role/StockBasedCompensation 30 false false R31.htm 2310301 - Disclosure - Goodwill (Tables) Sheet http://www.phihelico.com/role/GoodwillTables Goodwill (Tables) Tables http://www.phihelico.com/role/Goodwill 31 false false R32.htm 2311301 - Disclosure - Other Intangible Assets (Tables) Sheet http://www.phihelico.com/role/OtherIntangibleAssetsTables Other Intangible Assets (Tables) Tables http://www.phihelico.com/role/OtherIntangibleAssets 32 false false R33.htm 2312301 - Disclosure - Segment Information (Tables) Sheet http://www.phihelico.com/role/SegmentInformationTables Segment Information (Tables) Tables http://www.phihelico.com/role/SegmentInformation 33 false false R34.htm 2315301 - Disclosure - Condensed Consolidating Financial Information (Tables) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationTables Condensed Consolidating Financial Information (Tables) Tables http://www.phihelico.com/role/CondensedConsolidatingFinancialInformation 34 false false R35.htm 2401403 - Disclosure - Basis of Presentation - Additional Information (Details) Sheet http://www.phihelico.com/role/BasisOfPresentationAdditionalInformationDetails Basis of Presentation - Additional Information (Details) Details 35 false false R36.htm 2401404 - Disclosure - Basis of Presentation - Disaggregated Revenue by Segment (Details) Sheet http://www.phihelico.com/role/BasisOfPresentationDisaggregatedRevenueBySegmentDetails Basis of Presentation - Disaggregated Revenue by Segment (Details) Details 36 false false R37.htm 2402402 - Disclosure - Investments - Components of Investments (Detail) Sheet http://www.phihelico.com/role/InvestmentsComponentsOfInvestmentsDetail Investments - Components of Investments (Detail) Details 37 false false R38.htm 2402403 - Disclosure - Investments - Additional Information (Detail) Sheet http://www.phihelico.com/role/InvestmentsAdditionalInformationDetail Investments - Additional Information (Detail) Details 38 false false R39.htm 2402404 - Disclosure - Investments - Cost and Fair Value of Debt Investments Based on Maturities (Detail) Sheet http://www.phihelico.com/role/InvestmentsCostAndFairValueOfDebtInvestmentsBasedOnMaturitiesDetail Investments - Cost and Fair Value of Debt Investments Based on Maturities (Detail) Details 39 false false R40.htm 2402405 - Disclosure - Investments - Average Coupon Rate Percentage and the Average Days to Maturity of Debt (Detail) Sheet http://www.phihelico.com/role/InvestmentsAverageCouponRatePercentageAndAverageDaysToMaturityOfDebtDetail Investments - Average Coupon Rate Percentage and the Average Days to Maturity of Debt (Detail) Details 40 false false R41.htm 2402406 - Disclosure - Investments - Investments in Continuous Unrealized Loss Position for Less Than Twelve Months (Detail) Sheet http://www.phihelico.com/role/InvestmentsInvestmentsInContinuousUnrealizedLossPositionForLessThanTwelveMonthsDetail Investments - Investments in Continuous Unrealized Loss Position for Less Than Twelve Months (Detail) Details 41 false false R42.htm 2402407 - Disclosure - Investments - Investments in Continuous Unrealized Loss Position for More Than Twelve Months (Detail) Sheet http://www.phihelico.com/role/InvestmentsInvestmentsInContinuousUnrealizedLossPositionForMoreThanTwelveMonthsDetail Investments - Investments in Continuous Unrealized Loss Position for More Than Twelve Months (Detail) Details 42 false false R43.htm 2403402 - Disclosure - Valuation Accounts - Additional Information (Detail) Sheet http://www.phihelico.com/role/ValuationAccountsAdditionalInformationDetail Valuation Accounts - Additional Information (Detail) Details 43 false false R44.htm 2403403 - Disclosure - Valuation Accounts - Schedule of Allowance for Contractual Discounts and Estimated Uncompensated Care as a Percentage of Gross Segment Accounts Receivable (Detail) Sheet http://www.phihelico.com/role/ValuationAccountsScheduleOfAllowanceForContractualDiscountsAndEstimatedUncompensatedCareAsPercentageOfGrossSegmentAccountsReceivableDetail Valuation Accounts - Schedule of Allowance for Contractual Discounts and Estimated Uncompensated Care as a Percentage of Gross Segment Accounts Receivable (Detail) Details 44 false false R45.htm 2404402 - Disclosure - Fair Value Measurements - Summary of Valuation of Investments and Financial Instruments Pricing Levels (Detail) Sheet http://www.phihelico.com/role/FairValueMeasurementsSummaryOfValuationOfInvestmentsAndFinancialInstrumentsPricingLevelsDetail Fair Value Measurements - Summary of Valuation of Investments and Financial Instruments Pricing Levels (Detail) Details 45 false false R46.htm 2404403 - Disclosure - Fair Value Measurements - Additional Information (Detail) Sheet http://www.phihelico.com/role/FairValueMeasurementsAdditionalInformationDetail Fair Value Measurements - Additional Information (Detail) Details 46 false false R47.htm 2405402 - Disclosure - Debt - Components of Long-term Debt (Detail) Sheet http://www.phihelico.com/role/DebtComponentsOfLongTermDebtDetail Debt - Components of Long-term Debt (Detail) Details 47 false false R48.htm 2405403 - Disclosure - Debt - Components of Long-term Debt (Additional Information) (Detail) Sheet http://www.phihelico.com/role/DebtComponentsOfLongTermDebtAdditionalInformationDetail Debt - Components of Long-term Debt (Additional Information) (Detail) Details 48 false false R49.htm 2405404 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.phihelico.com/role/DebtAdditionalInformationDetail Debt - Additional Information (Detail) Details 49 false false R50.htm 2406402 - Disclosure - Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Detail) Sheet http://www.phihelico.com/role/EarningsPerShareComponentsOfBasicAndDilutedEarningsPerShareDetail Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Detail) Details 50 false false R51.htm 2406403 - Disclosure - Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Additional Information) (Detail) Sheet http://www.phihelico.com/role/EarningsPerShareComponentsOfBasicAndDilutedEarningsPerShareAdditionalInformationDetail Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Additional Information) (Detail) Details 51 false false R52.htm 2407402 - Disclosure - Stock-Based Compensation - Summary of Share Based Compensation Expense (Detail) Sheet http://www.phihelico.com/role/StockBasedCompensationSummaryOfShareBasedCompensationExpenseDetail Stock-Based Compensation - Summary of Share Based Compensation Expense (Detail) Details 52 false false R53.htm 2408401 - Disclosure - Asset Disposals - Additional Information (Detail) Sheet http://www.phihelico.com/role/AssetDisposalsAdditionalInformationDetail Asset Disposals - Additional Information (Detail) Details 53 false false R54.htm 2409401 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.phihelico.com/role/CommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 54 false false R55.htm 2410402 - Disclosure - Goodwill (Details) Sheet http://www.phihelico.com/role/GoodwillDetails Goodwill (Details) Details http://www.phihelico.com/role/GoodwillTables 55 false false R56.htm 2411402 - Disclosure - Other Intangible Assets (Details) Sheet http://www.phihelico.com/role/OtherIntangibleAssetsDetails Other Intangible Assets (Details) Details http://www.phihelico.com/role/OtherIntangibleAssetsTables 56 false false R57.htm 2411403 - Disclosure - Other Intangible Assets - Future Amortization of Intangible Assets (Details) Sheet http://www.phihelico.com/role/OtherIntangibleAssetsFutureAmortizationOfIntangibleAssetsDetails Other Intangible Assets - Future Amortization of Intangible Assets (Details) Details 57 false false R58.htm 2412402 - Disclosure - Segment Information - Additional Information (Detail) Sheet http://www.phihelico.com/role/SegmentInformationAdditionalInformationDetail Segment Information - Additional Information (Detail) Details 58 false false R59.htm 2412403 - Disclosure - Segment Information - Schedule of Provisions for Contractual Discounts and Estimated Uncompensated Care as a Percentage of Gross Segment Billings (Detail) Sheet http://www.phihelico.com/role/SegmentInformationScheduleOfProvisionsForContractualDiscountsAndEstimatedUncompensatedCareAsPercentageOfGrossSegmentBillingsDetail Segment Information - Schedule of Provisions for Contractual Discounts and Estimated Uncompensated Care as a Percentage of Gross Segment Billings (Detail) Details 59 false false R60.htm 2412404 - Disclosure - Segment Information - Schedule of Net Revenue Attributable to Insurance, Medicare, Medicaid, and Self-Pay as Percentage of Net Air Medical Revenues (Detail) Sheet http://www.phihelico.com/role/SegmentInformationScheduleOfNetRevenueAttributableToInsuranceMedicareMedicaidAndSelfPayAsPercentageOfNetAirMedicalRevenuesDetail Segment Information - Schedule of Net Revenue Attributable to Insurance, Medicare, Medicaid, and Self-Pay as Percentage of Net Air Medical Revenues (Detail) Details 60 false false R61.htm 2412405 - Disclosure - Segment Information - Schedule of Financial Information Concerning Reportable Operating Segments (Detail) Sheet http://www.phihelico.com/role/SegmentInformationScheduleOfFinancialInformationConcerningReportableOperatingSegmentsDetail Segment Information - Schedule of Financial Information Concerning Reportable Operating Segments (Detail) Details 61 false false R62.htm 2412406 - Disclosure - Segment Information - Depreciation and Amortization Expense Included in Direct Expenses and Unallocated Selling, General, and Administrative Costs (Detail) Sheet http://www.phihelico.com/role/SegmentInformationDepreciationAndAmortizationExpenseIncludedInDirectExpensesAndUnallocatedSellingGeneralAndAdministrativeCostsDetail Segment Information - Depreciation and Amortization Expense Included in Direct Expenses and Unallocated Selling, General, and Administrative Costs (Detail) Details 62 false false R63.htm 2413401 - Disclosure - Investment in Variable Interest Entity and Other Investments and Affiliates - Additional Information (Detail) Sheet http://www.phihelico.com/role/InvestmentInVariableInterestEntityAndOtherInvestmentsAndAffiliatesAdditionalInformationDetail Investment in Variable Interest Entity and Other Investments and Affiliates - Additional Information (Detail) Details 63 false false R64.htm 2415402 - Disclosure - Condensed Consolidating Financial Information - Additional Information (Detail) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationAdditionalInformationDetail Condensed Consolidating Financial Information - Additional Information (Detail) Details 64 false false R65.htm 2415403 - Disclosure - Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Balance Sheets (Detail) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationGuarantorSubsidiariesCondensedConsolidatingBalanceSheetsDetail Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Balance Sheets (Detail) Details 65 false false R66.htm 2415404 - Disclosure - Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Operations (Detail) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationGuarantorSubsidiariesCondensedConsolidatingStatementsOfOperationsDetail Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Operations (Detail) Details 66 false false R67.htm 2415405 - Disclosure - Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidated Statements of Comprehensive Income (Loss) (Detail) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationGuarantorSubsidiariesCondensedConsolidatedStatementsOfComprehensiveIncomeLossDetail Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidated Statements of Comprehensive Income (Loss) (Detail) Details 67 false false R68.htm 2415406 - Disclosure - Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Cash Flows (Detail) Sheet http://www.phihelico.com/role/CondensedConsolidatingFinancialInformationGuarantorSubsidiariesCondensedConsolidatingStatementsOfCashFlowsDetail Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Cash Flows (Detail) Details 68 false false All Reports Book All Reports phii-20180930.xml phii-20180930.xsd phii-20180930_cal.xml phii-20180930_def.xml phii-20180930_lab.xml phii-20180930_pre.xml http://fasb.org/srt/2018-01-31 http://xbrl.sec.gov/dei/2018-01-31 http://fasb.org/us-gaap/2018-01-31 true true