3.10.0.1 html 313 306 1 false 67 0 false 10 false false R1.htm 0002000 - Document - Document and Entity Information Sheet http://www.regfuel.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - Condensed Consolidated Balance Sheets (unaudited) Sheet http://www.regfuel.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.regfuel.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.regfuel.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.regfuel.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeLossUnaudited Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) Statements 5 false false R6.htm 1004000 - Statement - Condensed Consolidated Statements of Equity (unaudited) Sheet http://www.regfuel.com/role/CondensedConsolidatedStatementsOfEquityUnaudited Condensed Consolidated Statements of Equity (unaudited) Statements 6 false false R7.htm 1004001 - Statement - Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) Sheet http://www.regfuel.com/role/CondensedConsolidatedStatementsOfEquityUnauditedParenthetical Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) Statements 7 false false R8.htm 1005000 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) Sheet http://www.regfuel.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (unaudited) Statements 8 false false R9.htm 2101100 - Disclosure - Basis of Presentation and Nature of the Business Sheet http://www.regfuel.com/role/BasisOfPresentationAndNatureOfBusiness Basis of Presentation and Nature of the Business Notes 9 false false R10.htm 2102100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 2103100 - Disclosure - Acquisitions Sheet http://www.regfuel.com/role/Acquisitions Acquisitions Notes 11 false false R12.htm 2105100 - Disclosure - Inventories Sheet http://www.regfuel.com/role/Inventories Inventories Notes 12 false false R13.htm 2106100 - Disclosure - Other Assets Sheet http://www.regfuel.com/role/OtherAssets Other Assets Notes 13 false false R14.htm 2108100 - Disclosure - Intangible Assets Sheet http://www.regfuel.com/role/IntangibleAssets Intangible Assets Notes 14 false false R15.htm 2109100 - Disclosure - Debt Sheet http://www.regfuel.com/role/Debt Debt Notes 15 false false R16.htm 2111100 - Disclosure - Derivative Instruments Sheet http://www.regfuel.com/role/DerivativeInstruments Derivative Instruments Notes 16 false false R17.htm 2112100 - Disclosure - Fair Value Measurement Sheet http://www.regfuel.com/role/FairValueMeasurement Fair Value Measurement Notes 17 false false R18.htm 2113100 - Disclosure - Net Income (Loss) Per Share Sheet http://www.regfuel.com/role/NetIncomeLossPerShare Net Income (Loss) Per Share Notes 18 false false R19.htm 2114100 - Disclosure - Reportable Segments and Geographic Information Sheet http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformation Reportable Segments and Geographic Information Notes 19 false false R20.htm 2115100 - Disclosure - Commitments and Contingencies Sheet http://www.regfuel.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 20 false false R21.htm 2202201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.regfuel.com/role/SummaryOfSignificantAccountingPolicies 21 false false R22.htm 2302302 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.regfuel.com/role/SummaryOfSignificantAccountingPolicies 22 false false R23.htm 2303301 - Disclosure - Acquisitions (Tables) Sheet http://www.regfuel.com/role/AcquisitionsTables Acquisitions (Tables) Tables http://www.regfuel.com/role/Acquisitions 23 false false R24.htm 2305301 - Disclosure - Inventories (Tables) Sheet http://www.regfuel.com/role/InventoriesTables Inventories (Tables) Tables http://www.regfuel.com/role/Inventories 24 false false R25.htm 2306301 - Disclosure - Other Assets (Tables) Sheet http://www.regfuel.com/role/OtherAssetsTables Other Assets (Tables) Tables http://www.regfuel.com/role/OtherAssets 25 false false R26.htm 2308301 - Disclosure - Intangible Assets (Tables) Sheet http://www.regfuel.com/role/IntangibleAssetsTables Intangible Assets (Tables) Tables http://www.regfuel.com/role/IntangibleAssets 26 false false R27.htm 2309301 - Disclosure - Debt (Tables) Sheet http://www.regfuel.com/role/DebtTables Debt (Tables) Tables http://www.regfuel.com/role/Debt 27 false false R28.htm 2311301 - Disclosure - Derivative Instruments (Tables) Sheet http://www.regfuel.com/role/DerivativeInstrumentsTables Derivative Instruments (Tables) Tables http://www.regfuel.com/role/DerivativeInstruments 28 false false R29.htm 2312301 - Disclosure - Fair Value Measurement (Tables) Sheet http://www.regfuel.com/role/FairValueMeasurementTables Fair Value Measurement (Tables) Tables http://www.regfuel.com/role/FairValueMeasurement 29 false false R30.htm 2313301 - Disclosure - Net Income (Loss) Per Share (Tables) Sheet http://www.regfuel.com/role/NetIncomeLossPerShareTables Net Income (Loss) Per Share (Tables) Tables http://www.regfuel.com/role/NetIncomeLossPerShare 30 false false R31.htm 2314301 - Disclosure - Reportable Segments and Geographic Information (Tables) Sheet http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationTables Reportable Segments and Geographic Information (Tables) Tables http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformation 31 false false R32.htm 2401401 - Disclosure - Basis of Presentation and Nature of the Business (Details) Sheet http://www.regfuel.com/role/BasisOfPresentationAndNatureOfBusinessDetails Basis of Presentation and Nature of the Business (Details) Details http://www.regfuel.com/role/BasisOfPresentationAndNatureOfBusiness 32 false false R33.htm 2402403 - Disclosure - Summary of Significant Accounting Policies (Details Textual) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesDetailsTextual Summary of Significant Accounting Policies (Details Textual) Details http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesTables 33 false false R34.htm 2402404 - Disclosure - Summary of Significant Accounting Policies (Disaggregation of Revenue) (Details) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesDisaggregationOfRevenueDetails Summary of Significant Accounting Policies (Disaggregation of Revenue) (Details) Details http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesTables 34 false false R35.htm 2402405 - Disclosure - Summary of Significant Accounting Policies (Contract Balances) (Details) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesContractBalancesDetails Summary of Significant Accounting Policies (Contract Balances) (Details) Details http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesTables 35 false false R36.htm 2402406 - Disclosure - Summary of Significant Accounting Policies (Significant Changes in Contract Liabilities) (Details) Sheet http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesSignificantChangesInContractLiabilitiesDetails Summary of Significant Accounting Policies (Significant Changes in Contract Liabilities) (Details) Details http://www.regfuel.com/role/SummaryOfSignificantAccountingPoliciesTables 36 false false R37.htm 2403402 - Disclosure - Acquisitions (Details Textual) Sheet http://www.regfuel.com/role/AcquisitionsDetailsTextual Acquisitions (Details Textual) Details http://www.regfuel.com/role/AcquisitionsTables 37 false false R38.htm 2403403 - Disclosure - Acquisitions (Details) Sheet http://www.regfuel.com/role/AcquisitionsDetails Acquisitions (Details) Details http://www.regfuel.com/role/AcquisitionsTables 38 false false R39.htm 2405402 - Disclosure - Inventories (Details) Sheet http://www.regfuel.com/role/InventoriesDetails Inventories (Details) Details http://www.regfuel.com/role/InventoriesTables 39 false false R40.htm 2406402 - Disclosure - Other Assets (Details) Sheet http://www.regfuel.com/role/OtherAssetsDetails Other Assets (Details) Details http://www.regfuel.com/role/OtherAssetsTables 40 false false R41.htm 2406403 - Disclosure - Other Assets (Details Textual) Sheet http://www.regfuel.com/role/OtherAssetsDetailsTextual Other Assets (Details Textual) Details http://www.regfuel.com/role/OtherAssetsTables 41 false false R42.htm 2406404 - Disclosure - Other Assets (Details 1) Sheet http://www.regfuel.com/role/OtherAssetsDetails1 Other Assets (Details 1) Details http://www.regfuel.com/role/OtherAssetsTables 42 false false R43.htm 2408402 - Disclosure - Intangible Assets (Details) Sheet http://www.regfuel.com/role/IntangibleAssetsDetails Intangible Assets (Details) Details http://www.regfuel.com/role/IntangibleAssetsTables 43 false false R44.htm 2408403 - Disclosure - Intangible Assets (Details Textual) Sheet http://www.regfuel.com/role/IntangibleAssetsDetailsTextual Intangible Assets (Details Textual) Details http://www.regfuel.com/role/IntangibleAssetsTables 44 false false R45.htm 2408404 - Disclosure - Intangible Assets (Details 1) Sheet http://www.regfuel.com/role/IntangibleAssetsDetails1 Intangible Assets (Details 1) Details http://www.regfuel.com/role/IntangibleAssetsTables 45 false false R46.htm 2409402 - Disclosure - Debt (Details) Sheet http://www.regfuel.com/role/DebtDetails Debt (Details) Details http://www.regfuel.com/role/DebtTables 46 false false R47.htm 2409403 - Disclosure - Debt (Details Textual) Sheet http://www.regfuel.com/role/DebtDetailsTextual Debt (Details Textual) Details http://www.regfuel.com/role/DebtTables 47 false false R48.htm 2409404 - Disclosure - Debt (Details 1) Sheet http://www.regfuel.com/role/DebtDetails1 Debt (Details 1) Details http://www.regfuel.com/role/DebtTables 48 false false R49.htm 2411402 - Disclosure - Derivative Instruments (Details Textual) Sheet http://www.regfuel.com/role/DerivativeInstrumentsDetailsTextual Derivative Instruments (Details Textual) Details http://www.regfuel.com/role/DerivativeInstrumentsTables 49 false false R50.htm 2411403 - Disclosure - Derivative Instruments (Details) Sheet http://www.regfuel.com/role/DerivativeInstrumentsDetails Derivative Instruments (Details) Details http://www.regfuel.com/role/DerivativeInstrumentsTables 50 false false R51.htm 2411404 - Disclosure - Derivative Instruments (Details 1) Sheet http://www.regfuel.com/role/DerivativeInstrumentsDetails1 Derivative Instruments (Details 1) Details http://www.regfuel.com/role/DerivativeInstrumentsTables 51 false false R52.htm 2412402 - Disclosure - Fair Value Measurement (Details) Sheet http://www.regfuel.com/role/FairValueMeasurementDetails Fair Value Measurement (Details) Details http://www.regfuel.com/role/FairValueMeasurementTables 52 false false R53.htm 2412403 - Disclosure - Fair Value Measurement (Details 1) Sheet http://www.regfuel.com/role/FairValueMeasurementDetails1 Fair Value Measurement (Details 1) Details http://www.regfuel.com/role/FairValueMeasurementTables 53 false false R54.htm 2412404 - Disclosure - Fair Value Measurement (Details 2) Sheet http://www.regfuel.com/role/FairValueMeasurementDetails2 Fair Value Measurement (Details 2) Details http://www.regfuel.com/role/FairValueMeasurementTables 54 false false R55.htm 2412405 - Disclosure - Fair Value Measurement (Details Textual) Sheet http://www.regfuel.com/role/FairValueMeasurementDetailsTextual Fair Value Measurement (Details Textual) Details http://www.regfuel.com/role/FairValueMeasurementTables 55 false false R56.htm 2413402 - Disclosure - Net Income (Loss) Per Share (Details) Sheet http://www.regfuel.com/role/NetIncomeLossPerShareDetails Net Income (Loss) Per Share (Details) Details http://www.regfuel.com/role/NetIncomeLossPerShareTables 56 false false R57.htm 2413403 - Disclosure - Net Income (Loss) Per Share (Details 1) Sheet http://www.regfuel.com/role/NetIncomeLossPerShareDetails1 Net Income (Loss) Per Share (Details 1) Details http://www.regfuel.com/role/NetIncomeLossPerShareTables 57 false false R58.htm 2414402 - Disclosure - Reportable Segments and Geographic Information (Details Textual) Sheet http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationDetailsTextual Reportable Segments and Geographic Information (Details Textual) Details http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationTables 58 false false R59.htm 2414403 - Disclosure - Reportable Segments and Geographic Information (Details) Sheet http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationDetails Reportable Segments and Geographic Information (Details) Details http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationTables 59 false false R60.htm 2414404 - Disclosure - Reportable Segments and Geographic Information (Details 1) Sheet http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationDetails1 Reportable Segments and Geographic Information (Details 1) Details http://www.regfuel.com/role/ReportableSegmentsAndGeographicInformationTables 60 false false All Reports Book All Reports regi-20180630.xml regi-20180630.xsd regi-20180630_cal.xml regi-20180630_def.xml regi-20180630_lab.xml regi-20180630_pre.xml http://xbrl.sec.gov/dei/2014-01-31 http://fasb.org/us-gaap/2017-01-31 http://xbrl.sec.gov/country/2017-01-31 true true