Document And Entity Information Statistical Measurement [Axis] Note To Financial Statement Details Textual Significant Accounting Policies Interest income, net Net interest income Note 2 - Stock-based Compensation us-gaap_IncomeTaxExpenseBenefit INCOME TAX BENEFIT (EXPENSE) Segment tax expense (benefit) us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 3 - Net Income Per Share Computations ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 5 - Operating Segments Issuance of deferred stock awards (in shares) Trading Arrangements, by Individual [Table] Note 7 - Real Estate Development Depreciation and amortization Depreciation and amortization Material Terms of Trading Arrangement [Text Block] Note 8 - Leases Related and Nonrelated Parties [Axis] Note 2 - Stock-based Compensation - Unvested Restricted Stock and Deferred Stock (Details) Real Estate Disclosure [Text Block] Note 3 - Net Income Per Share Computations - Reconciliation of Net Common Share Computation (Details) Note 5 - Operating Segments - Disaggregation of Revenue from Contracts with Customers (Details) Employee Deferred Stock Award [Member] Represents information related to employee deferred stock award. Note 5 - Operating Segments - Reconciliation of Segment Revenues, Income Before Income Taxes, and Assets (Details) Minimum [Member] Note 5 - Operating Segments - Income Before Income Taxes (Details) Product and Service, Other [Member] Note 5 - Operating Segments - Assets (Details) Statistical Measurement [Domain] Note 7 - Real Estate Development - Summary of Equity Method Investments (Details) Maximum [Member] Note 8 - Leases - Classification of Right of Use Assets (Details) Note 8 - Leases - Lease Terms and Discount (Details) Schedule of Long-Term Debt Instruments [Table] Loss from equity investment Income (Loss) from Equity Method Investments Loss from equity investment Note 8 - Leases - Operating and Finance Lease (Details) Non-Employee Board Member Stock Option and Restricted Stock [Member] Represents non-employee board member stock option and restricted stock. Notes To Financial Statements us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Notes To Financial Statements [Abstract] Operating Activities: cphc_EstimatedCostOfTaxIncrementFinancingEligibleImprovementsExpectedReduction Estimated Cost of Tax Increment Financing Eligible Improvements, Expected Reduction The amount of expected reduction to estimated cost of tax increment financing eligible improvements. Investing Activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Financing Activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities Doran Canterbury I and II Joint Ventures [Member] Represents Doran Canterbury I and II joint venture. us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities Accrued wages and payroll taxes us-gaap_Dividends Dividend Salaries and benefits Operating Segments [Member] Income Tax Jurisdiction [Domain] Accounting Policies [Abstract] Segments [Domain] Accounts receivable, allowance Land held for development Accounts Receivable [Policy Text Block] Cash dividends declared per share (in dollars per share) Segments [Axis] Income taxes receivable and prepaid income taxes Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes plus prepaid income taxes. Income Statement [Abstract] Intersegment Eliminations [Member] us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) cphc_IncreaseDecreaseInIncomeTaxesPayableAndPrepaidIncomeTaxes Income taxes receivable and prepaid income taxes The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid plus prepaid income taxes. us-gaap_NumberOfReportableSegments Number of Reportable Segments 401(k) stock match (in shares) 401(k) stock match Segment Reporting [Text Block] Canterbury DBSV [Member] Information related to Canterbury DBSV. us-gaap_IncreaseDecreaseInOtherReceivables Other long-term receivables cphc_IncreaseDecreaseInTIFReceivable TIF receivable Related to the increase (decrease) in TIF receivable during the period. cphc_PaymentsForTaxIncrementFinancingEligibleImprovements Additions for TIF eligible improvements Amount of cash outflow for tax increment financing eligible improvements. Award Type [Axis] Segment Reporting [Table Text Block] Net income (loss) NET (LOSS) INCOME Net loss Adjustments to reconcile net income (loss) to net cash provided by operating activities: Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] us-gaap_Liabilities TOTAL LIABILITIES Segment Reporting, Reconciliation of Revenue by Segment to Consolidated [Table Text Block] Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block] cphc_PurseFundContributionAgreementAdditionalPurseMoniesForPotentialOverpaymentOfPursesProvided Purse Fund Contribution Agreement, Additional Purse Monies for Potential Overpayment of Purses Provided Represents the additional purse monies provided for the potential overpayment of purses included in a purse fund contribution agreement. Real Estate [Table] us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable Accrued property taxes us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense Consolidation Items [Axis] us-gaap_LiabilitiesAndStockholdersEquity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY us-gaap_AreaOfRealEstateProperty Area of Real Estate Property (Square Foot) cphc_PurseFundContributionAgreementAdditionalPurseMoniesGuaranteed Purse Fund Contribution Agreement, Additional Purse Monies Guaranteed Represents the additional purse monies guaranteed under a purse fund contribution agreement. Title and Position [Axis] us-gaap_AreaOfLand Area of Land (Acre) Stock-based compensation expense Reportable Legal Entities [Member] Consolidation Items [Domain] us-gaap_CostsAndExpenses Total Operating Expenses Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Domain] Lessee, Lease, Description [Table] Share-Based Payment Arrangement [Text Block] Location, Statement of Income, Balance [Axis] us-gaap_PaymentsForCapitalImprovements Additions to land, buildings, and equipment Total Equity Method Investments [Member] Represents total equity method investments. Assets, Lessee [Table Text Block] Tabular disclosure of lessee's assets. Changes in operating assets and liabilities: us-gaap_IncreaseDecreaseInAccountsPayable Accounts payable Accounting Standards Update and Change in Accounting Principle [Table] Cash dividends received from investments Proceeds from Equity Method Investment, Distribution, Return of Capital CPHC's dividends received from joint ventures Lessee, Operating and Financing, Lease Liability Maturity [Table Text Block] Tabular disclosure of lease liability for operating and financing. Schedule of non-cash investing and financing activities cphc_OperatingAndFinanceLeaseRightofuseAsset Total Leased Assets us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase in cash, cash equivalents, and restricted cash Related and Nonrelated Parties [Domain] Related Party Transaction [Table] Doran Canterbury II 1 [Member] Represents Doran Canterbury II. Doran Canterbury I Joint Venture 1 [Member] Represents Doran Canterbury I Joint Venture 1 Related Party Transactions Disclosure [Text Block] Other Investment 1 [Member] Represents Other Investment. New Accounting Pronouncements, Policy [Policy Text Block] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Total Equity Method Investments 1 [Member] Represents Total Equity Method Investments 1. Other Investment [Member] Represent Other Investment Statement [Table] Credit Facility [Axis] Credit Facility [Domain] Revolving Credit Facility [Member] Other prepaid expenses Prepaid expenses OTHER INCOME (LOSS) Equity investment Statement of Financial Position [Abstract] us-gaap_NonoperatingIncomeExpense Net Other Loss us-gaap_FinanceLeasePrincipalPayments Principal payments on finance leases us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity us-gaap_LiabilitiesNoncurrent Noncurrent liabilities Total Long-term Liabilities us-gaap_AssetsNoncurrent Noncurrent assets Total Long-term Assets LONG-TERM ASSETS us-gaap_EquityMethodInvestmentOwnershipPercentage Equity Method Investment, Ownership Percentage cphc_SourceOfRevenuesOfHorseRacingSegment Source of Revenues of Horse Racing Segment Percent of gross revenues earned on live racing and special event days by the food and beverage segment that is paid to the horse racing segment for use of the facilities. us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber Non-Vested Balance (in shares) Non-Vested Balance (in shares) Advertising and marketing us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue Non-Vested Balance, weighted average fair value per share (in dollars per share) Non-Vested Balance, weighted average fair value per share (in dollars per share) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Line of Credit Facility, Remaining Borrowing Capacity Granted, weighted average fair value per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) Long-Term Debt, Type [Axis] us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1 Finance (Year) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod Forfeited (in shares) LONG-TERM LIABILITIES Product and Service [Domain] Product and Service [Axis] us-gaap_LineOfCredit Long-Term Line of Credit us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization Finance Lease, Right-of-Use Asset, Accumulated Amortization cphc_InvesteeIncomeInExcessOfEquityInvestment CPHC share of joint ventures' equity Represents the investee income in excess of an equity investment. Vested, weighted average fair value per share (in dollars per share) us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod Vested (in shares) cphc_IncreaseDecreaseInInventoriesAndPrepaidExpense Inventory, prepaid expenses and deposits The increase (decrease) during the reporting period in the amount of inventory and outstanding money paid in advance for goods or services that bring economic benefits for future periods. Development [Member] Represents information related to development. Other operating expenses Change in investee losses in excess of equity investments Amount of change in investee losses in excess of equity investments. Horse Racing [Member] Represents information related to horse racing. Card Casino [Member] Represents information related to card casino. us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent Finance Document Type OPERATING EXPENSES: Document Information [Line Items] Document Quarterly Report Document Information [Table] cphc_PurseFundOverpaymentReceivable Purse Fund Overpayment Receivable Amount of overpayment receivable of purchase fund as of balance sheet date. us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) us-gaap_OperatingLeaseExpense Operating Lease, Expense Plus dilutive effect of deferred stock awards (in shares) Entity Interactive Data Current us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) Document Transition Report Commitments and Contingencies Disclosure [Text Block] Weighted average diluted shares (in shares) Diluted (in shares) Statement [Line Items] Food and Beverage Segment [Member] Information related to food and beverage. Common stock, shares issued (in shares) Common stock, shares outstanding (in shares) Award Type [Domain] Common stock, shares authorized (in shares) Weighted average basic shares outstanding (in shares) us-gaap_NotesReceivableNet Financing Receivable, after Allowance for Credit Loss Antidilutive Security, Excluded EPS Calculation [Table] Basic earnings (loss) per share (in dollars per share) us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Dividend declared but not yet paid Common stock, $.01 par value, 10,000,000 shares authorized, 5,183,394 and 5,121,331 respectively, shares issued and outstanding Title and Position [Domain] us-gaap_FinanceLeaseRightOfUseAssetAmortization Finance Lease, Right-of-Use Asset, Amortization Deposits Proceeds from issuance of common stock Accounts payable Income Tax Jurisdiction [Axis] us-gaap_FinanceLeaseLiability Present value of minimum lease payments, finance lease us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables Document Fiscal Period Focus Accrued property taxes Document Fiscal Year Focus Investment, Name [Domain] us-gaap_DepreciationAndAmortization Depreciation and amortization Finance lease obligations, net of current portion Lease obligations, net of current portion, finance lease us-gaap_FinanceLeaseLiabilityPaymentsDue Total minimum lease obligations, finance lease Restricted cash Amendment Flag Current portion of finance lease obligations Less: current portion, finance lease us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount Less: amounts representing interest, finance lease cphc_IncomeTaxReceivablePrincipal Income Tax Receivable Principal Represents income tax receivable principal. 2029, finance lease Common Stock [Member] cphc_IncomeTaxReceivableInterest Income Tax Receivable Interest Represents income tax receivable interest. 2028, finance lease Short-term investments Doran Canterbury I Joint Venture [Member] Represents Doran Canterbury I joint venture. us-gaap_AccruedLiabilitiesCurrent Casino accruals Doran Canterbury II [Member] Represents information related to Doran Canterbury II. 2027, finance lease Document Period End Date cphc_TIFImprovementCosts TIF Improvement Costs Represents information related to TIF improvement. Related party receivable Cash dividend payable Legal Entity [Axis] Related Party [Member] Accrued wages and payroll taxes us-gaap_OperatingLeaseCost Operating Lease, Cost 2026 remaining, finance lease Entity File Number Entity Tax Identification Number Indemnity Agreement [Member] Represents indemnity agreement. Entity [Domain] Entity Central Index Key Entity Registrant Name Entity Current Reporting Status Entity Incorporation, State or Country Code Current Fiscal Year End Date cphc_EstimatedCostOfTaxIncrementFinancingEligibleImprovementsMaximum Estimated Cost of Tax Increment Financing Eligible Improvements, Maximum Principle Represents the maximum estimated cost of tax increment financing eligible improvements. Entity Filer Category Entity Shell Company Entity Emerging Growth Company Entity Small Business us-gaap_OperatingIncomeLoss INCOME FROM OPERATIONS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Income Tax Jurisdiction, Domestic State and Local [Member] Payable to horsepersons Represents accounts payable to horsepersons. Proceeds from sale of short-term investments OPERATING REVENUES: Entity Address, State or Province Loss Contingencies [Table] Statement of Stockholders' Equity [Abstract] Entity Address, City or Town Leases of Lessee and Commitments Disclosure [Text Block] The entire disclosure of leases of lessee and commitments. us-gaap_OriginationOfNotesReceivableFromRelatedParties Increase in related party receivable Retained earnings Entity Address, Address Line One Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Statement of Cash Flows [Abstract] City Area Code Proceeds from disposal of assets The proceeds from sale of productive assets, excluding land. us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation Payments for taxes related to net share settlement of equity awards Local Phone Number Entity Address, Postal Zip Code cphc_OvernightRacingExpensesAveragePurseStructure Overnight Racing Expense, Price Per Race The average purse structure associated with the price of overnight races. cphc_OvernightRacingExpensePricePerRace Overnight Racing Expense, Price Per Race The price per race that has been guaranteed by the company to a third party company. cphc_PolicyTable Long-Term Debt, Type [Domain] STOCKHOLDERS’ EQUITY Title of 12(b) Security Equity Components [Axis] Security Exchange Name Trading Symbol Operating lease liabilities Class of Stock [Axis] Equity Component [Domain] Prime Rate [Member] Variable Rate [Domain] Revenue [Policy Text Block] Entity Common Stock, Shares Outstanding Additional Paid-in Capital [Member] Retained Earnings [Member] Earnings Per Share [Text Block] Cost of goods and services sold Professional and contracted services Director [Member] Basic (in shares) Land, buildings, and equipment, net us-gaap_PropertyPlantAndEquipmentNet Business Combination, Goodwill, Reportable Segment Assignment [Table] Additions to land, buildings, and equipment funded through accounts payable Investee losses in excess of equity investment Investee Losses in Excess of Equity Investment CPHC share of joint ventures' equity Represents the amount of investee losses in excess of equity investment. us-gaap_DeferredIncomeTaxesAndTaxCredits Deferred income taxes Minnesota Breeders’ Fund Represents Minnesota Breeders' Frond. Purse expense Represents purse expense. Common stock, par value (in dollars per share) cphc_DebtInstrumentMaximumReimbursementAndIndemnificationAmount Debt Instrument, Maximum Reimbursement and Indemnification Amount Maximum amount of reimbursement and indemnification under debt instrument. Investment, Name [Axis] Other Pari-mutuel Expenses [Member] Represents other pari-mutual expenses. cphc_DebtInstrumentAdditionalReimbursementAndIndemnificationAmount Debt Instrument, Additional Reimbursement and Indemnification Amount Additional amount of reimbursement and indemnification under debt instrument. Stock-based compensation Basis of Accounting, Policy [Policy Text Block] Pari-mutuel [Member] Represents pari-mutuel. Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Impairment to other long-term receivables Impairment to Other Long-term Receivables Amount of impairment to other long-term receivables. 2029 and beyond, finance lease Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). us-gaap_Assets Segment Assets TOTAL ASSETS Deferred income taxes Cash and cash equivalents Schedule of Nonvested Share Activity [Table Text Block] Supplemental disclosure of cash flow information: Stock-based employee match contribution CURRENT LIABILITIES us-gaap_LiabilitiesCurrent Current liabilities Total Current Liabilities Diluted earnings (loss) per share (in dollars per share) cphc_FinancingReceivableInterestRate Financing Receivable, Interest Rate Interest rate on financing receivable. us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Deferred revenue Accounts receivable, net of allowance of $7,670 for both periods Accounts Receivable, after Allowance for Credit Loss, Current Other long-term receivables Other Receivables Equity Method Investments [Table Text Block] TIF receivable Income Taxes Receivable, Noncurrent Casino [Member] cphc_EquityMethodInvestmentAnnualPreferredReturnPercentage Equity Method Investment, Annual Preferred Return Percentage Represents the annual preferred return percentage of an equity method investment. Lease, Cost [Table Text Block] Food and Beverage [Member] us-gaap_GainLossOnDispositionOfAssets1 Gain on disposal of assets us-gaap_InterestReceivable Interest Receivable us-gaap_ProceedsFromInterestReceived Proceeds from Interest Received Interest paid us-gaap_PaymentsToAcquireEquityMethodInvestments Payments to Acquire Equity Method Investments Equity investment contributions us-gaap_PaymentsToAcquireInvestments Purchase of short-term investments Inventory Public Utilities [Member] us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Income before income taxes (LOSS) INCOME BEFORE INCOME TAXES cphc_IncreaseDecreaseInOperatingLeaseRightOfUseAssets Operating lease right-of-use asset Represents increase (decrease) in operating lease right of use assets. Additional paid-in capital Debt Disclosure [Text Block] us-gaap_IncreaseDecreaseInContractWithCustomerLiability Deferred revenue us-gaap_StockholdersEquity Joint ventures' equity Total Stockholders’ Equity Balance Balance Forfeited, weighted average fair value per share (in dollars per share) Casino accruals Represents increase (decrease) in Card Casino accruals. cphc_IncreaseDecreaseInAccountsPayableToHorsepersons Payable to horsepersons The increase (decrease) during the reporting period in the aggregate amount of accounts payable to horsepersons. cphc_FundsDueToOrganization Funds Due To Organization Represents funds due to organization. Trackside Investments, LLC [Member] Represents information related to Trackside Investments, LLC. us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) Shares issued under Employee Stock Purchase Plan us-gaap_PaymentsOfDividends Cash dividend paid to shareholders Deferred Revenue [Policy Text Block]. Disclosure of accounting policy for deferred revenue. us-gaap_FinanceLeaseRightOfUseAsset Finance CURRENT ASSETS Due To Organization [Policy Text Block] Disclosure of accounting policy for due to organization. Issuance of deferred stock awards us-gaap_AssetsCurrent Current assets Total Current Assets Shares issued under Employee Stock Purchase Plan (in shares) ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Revenues Net Revenues Net revenues from external customers us-gaap_GrossProfit Gross profit