3.22.2 html 177 189 1 false 55 0 false 7 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://adherex.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - Condensed Consolidated Balance Sheets Sheet http://adherex.com/role/StatementCondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://adherex.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 00200 - Statement - Condensed Consolidated Statements of Operations Sheet http://adherex.com/role/StatementCondensedConsolidatedStatementsOfOperations Condensed Consolidated Statements of Operations Statements 4 false false R5.htm 00300 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://adherex.com/role/StatementCondensedConsolidatedStatementsOfCashFlows Condensed Consolidated Statements of Cash Flows Statements 5 false false R6.htm 00400 - Statement - Condensed Consolidated Statements of Stockholders' Equity Sheet http://adherex.com/role/StatementCondensedConsolidatedStatementsOfStockholdersEquity Condensed Consolidated Statements of Stockholders' Equity Statements 6 false false R7.htm 10101 - Disclosure - Nature of Business and Going Concern Sheet http://adherex.com/role/DisclosureNatureOfBusinessAndGoingConcern Nature of Business and Going Concern Notes 7 false false R8.htm 10201 - Disclosure - Significant Accounting Policies Sheet http://adherex.com/role/DisclosureSignificantAccountingPolicies Significant Accounting Policies Notes 8 false false R9.htm 10301 - Disclosure - Loss per Share Sheet http://adherex.com/role/DisclosureLossPerShare Loss per Share Notes 9 false false R10.htm 10401 - Disclosure - Stockholders' Equity Sheet http://adherex.com/role/DisclosureStockholdersEquity Stockholders' Equity Notes 10 false false R11.htm 10501 - Disclosure - Fair Value Measurements Sheet http://adherex.com/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 11 false false R12.htm 10601 - Disclosure - Commitments and Contingencies Sheet http://adherex.com/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 12 false false R13.htm 10701 - Disclosure - Term Loans Sheet http://adherex.com/role/DisclosureTermLoans Term Loans Notes 13 false false R14.htm 10801 - Disclosure - Subsequent Events Sheet http://adherex.com/role/DisclosureSubsequentEvents Subsequent Events Notes 14 false false R15.htm 20202 - Disclosure - Significant Accounting Policies (Policies) Sheet http://adherex.com/role/DisclosureSignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) Policies http://adherex.com/role/DisclosureSignificantAccountingPolicies 15 false false R16.htm 30203 - Disclosure - Significant Accounting Policies (Tables) Sheet http://adherex.com/role/DisclosureSignificantAccountingPoliciesTables Significant Accounting Policies (Tables) Tables http://adherex.com/role/DisclosureSignificantAccountingPolicies 16 false false R17.htm 30303 - Disclosure - Loss per Share (Tables) Sheet http://adherex.com/role/DisclosureLossPerShareTables Loss per Share (Tables) Tables http://adherex.com/role/DisclosureLossPerShare 17 false false R18.htm 30403 - Disclosure - Stockholders' Equity (Tables) Sheet http://adherex.com/role/DisclosureStockholdersEquityTables Stockholders' Equity (Tables) Tables http://adherex.com/role/DisclosureStockholdersEquity 18 false false R19.htm 30503 - Disclosure - Fair Value Measurements (Tables) Sheet http://adherex.com/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://adherex.com/role/DisclosureFairValueMeasurements 19 false false R20.htm 30703 - Disclosure - Term Loans (Tables) Sheet http://adherex.com/role/DisclosureTermLoansTables Term Loans (Tables) Tables http://adherex.com/role/DisclosureTermLoans 20 false false R21.htm 40101 - Disclosure - Nature of Business and Going Concern - Additional Information (Details) Sheet http://adherex.com/role/DisclosureNatureOfBusinessAndGoingConcernAdditionalInformationDetails Nature of Business and Going Concern - Additional Information (Details) Details 21 false false R22.htm 40201 - Disclosure - Significant Accounting Policies - Additional Information (Details) Sheet http://adherex.com/role/DisclosureSignificantAccountingPoliciesAdditionalInformationDetails Significant Accounting Policies - Additional Information (Details) Details 22 false false R23.htm 40202 - Disclosure - Significant Accounting Policies - Revenue recognition (Details) Sheet http://adherex.com/role/DisclosureSignificantAccountingPoliciesRevenueRecognitionDetails Significant Accounting Policies - Revenue recognition (Details) Details 23 false false R24.htm 40301 - Disclosure - Loss per Share - Computation of Basic and Diluted (Details) Sheet http://adherex.com/role/DisclosureLossPerShareComputationOfBasicAndDilutedDetails Loss per Share - Computation of Basic and Diluted (Details) Details 24 false false R25.htm 40302 - Disclosure - Loss per Share - Outstanding Options and Warrants (Details) Sheet http://adherex.com/role/DisclosureLossPerShareOutstandingOptionsAndWarrantsDetails Loss per Share - Outstanding Options and Warrants (Details) Details 25 false false R26.htm 40401 - Disclosure - Stockholders' Equity - Warrants to Purchase Common Stock (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquityWarrantsToPurchaseCommonStockDetails Stockholders' Equity - Warrants to Purchase Common Stock (Details) Details 26 false false R27.htm 40402 - Disclosure - Stockholders' Equity - Recognized Contractor and Employee Expense (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquityRecognizedContractorAndEmployeeExpenseDetails Stockholders' Equity - Recognized Contractor and Employee Expense (Details) Details 27 false false R28.htm 40403 - Disclosure - Stockholders' Equity - Summary of Option Activity (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquitySummaryOfOptionActivityDetails Stockholders' Equity - Summary of Option Activity (Details) Details 28 false false R29.htm 40404 - Disclosure - Stockholders' Equity - Additional Information (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquityAdditionalInformationDetails Stockholders' Equity - Additional Information (Details) Details 29 false false R30.htm 40405 - Disclosure - Stockholders' Equity - Black Scholes Option Pricing Model (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquityBlackScholesOptionPricingModelDetails Stockholders' Equity - Black Scholes Option Pricing Model (Details) Details 30 false false R31.htm 40406 - Disclosure - Stockholders Equity - Restricted Share Units Activity (Details) Sheet http://adherex.com/role/DisclosureStockholdersEquityRestrictedShareUnitsActivityDetails Stockholders Equity - Restricted Share Units Activity (Details) Details 31 false false R32.htm 40501 - Disclosure - Fair Value Measurements - Assets/Liabilities Measured at Fair Value (Details) Sheet http://adherex.com/role/DisclosureFairValueMeasurementsAssetsLiabilitiesMeasuredAtFairValueDetails Fair Value Measurements - Assets/Liabilities Measured at Fair Value (Details) Details 32 false false R33.htm 40502 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://adherex.com/role/DisclosureFairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 33 false false R34.htm 40601 - Disclosure - Commitments and Contingencies (Details) Sheet http://adherex.com/role/DisclosureCommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://adherex.com/role/DisclosureCommitmentsAndContingencies 34 false false R35.htm 40701 - Disclosure - Term Loans (Details) Sheet http://adherex.com/role/DisclosureTermLoansDetails Term Loans (Details) Details http://adherex.com/role/DisclosureTermLoansTables 35 false false R36.htm 40702 - Disclosure - Term Loans - Aggregate annual payments due on Term Loan (Details) Sheet http://adherex.com/role/DisclosureTermLoansAggregateAnnualPaymentsDueOnTermLoanDetails Term Loans - Aggregate annual payments due on Term Loan (Details) Details 36 false false R37.htm 40703 - Disclosure - Term Loans - Additional Information (Details) Sheet http://adherex.com/role/DisclosureTermLoansAdditionalInformationDetails Term Loans - Additional Information (Details) Details 37 false false R38.htm 40801 - Disclosure - Subsequent Events - Additional Information (Details) Sheet http://adherex.com/role/DisclosureSubsequentEventsAdditionalInformationDetails Subsequent Events - Additional Information (Details) Details 38 false false All Reports Book All Reports fencf-20220630x10q.htm fencf-20220630.xsd fencf-20220630_cal.xml fencf-20220630_def.xml fencf-20220630_lab.xml fencf-20220630_pre.xml fencf-20220630xex31d1.htm fencf-20220630xex31d2.htm fencf-20220630xex32d1.htm fencf-20220630xex99d1.htm fencf-20220630x10q001.jpg http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true