Document And Entity Information
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
Interest (expense)/income
Income tax expense
Income Tax Expense (Benefit)
Investment, Policy [Policy Text Block]
Significant Accounting Policies
Note 1 - Organization
Transferred at Point in Time [Member]
Note 2 - Summary of Significant Accounting Policies
Trading Arrangements, by Individual [Table]
Note 3 - Discontinued Operations
Retirement Benefits [Text Block]
Note 4 - Deposits, Prepayments and Other Current Assets
Insider Trading Policies and Procedures Adopted [Flag]
Insider Trading Policies and Procedures Adopted [Flag]
Note 5 - Cash and Cash Equivalents
Note 6 - Property and Equipment, Net
Note 7 - Leases
Note 8 - Other Payables and Accrued Liabilities
Minimum [Member]
Note 9 - Income Taxes
Note 11 - (Loss) Income Per Share
Insider Trading Policies and Procedures [Line Items]
Statistical Measurement [Domain]
Interests in subsidiaries
Note 12 - Financial Information of Parent Company
Maximum [Member]
Note 14 - Concentration of Risk
First HK$2.0 Million Profits [Member]
Relating to the first HK$2.0 million profits.
Note 15 - Segment Reporting
Note 16 - Share-based Compensation
Note 17 - Commitments and Contingencies
us-gaap_IncreaseDecreaseInAccountsReceivable
Increase (Decrease) in Accounts Receivable
Subsequent Profits [Member]
Relating to subsequent profits.
Note 1 - Organization - Schedule of Subsidiaries (Details)
Note 2 - Summary of Significant Accounting Policies - Schedule of Property Plant and Equipment Useful Life (Details)
Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)
Schedule of Lease Information [Table Text Block]
Tabular disclosure of lease information.
Notes 3 - Discontinued Operations - Schedule of Discontinued Operations (Details)
us-gaap_CostDepreciationAmortizationAndDepletion
Digital assets, depreciation
Depreciation of digital asset mining equipment
us-gaap_CostMaintenance
Maintenance and support fees to hosting facilities
Notes 3 - Discontinued Operations - Schedule of Change From Disposal of Subsidiary (Details)
Note 4 - Deposits, Prepayments and Other Current Assets - Schedule of Deposits, Prepayments and Other Current Assets (Details)
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Note 5 - Cash and Cash Equivalents (Details)
Customer A [Member]
Relating to customer A.
Note 6 - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details)
Note 7 - Leases - Lease Information (Details)
Customer C [Member]
Relating to customer C.
Note 7 - Leases - Lease Cost (Details)
Customer B [Member]
Relating to customer B.
Note 7 - Leases - Future Minimum Lease Payments (Details)
Note 8 - Other Payables and Accrued Liabilities - Schedule of Other Payables and Accrued Liabilities (Details)
Note 9 - Income Taxes - Schedule of Income Before Income Tax (Details)
Note 9 - Income Taxes - Schedule of Income Taxe Expense (Details)
Note 9 - Income Taxes - Income Tax Rate Reconciliation (Details)
Condensed Cash Flow Statement [Table Text Block]
Note 11 - (Loss) Income Per Share - Schedule of Earnings Per Share (Details)
Condensed Balance Sheet [Table Text Block]
Note 12 - Financial Information of Parent Company - Balance Sheet (Details)
Condensed Income Statement [Table Text Block]
Note 12 - Financial Information of Parent Company - Balance Sheet (Details) (Parentheticals)
Federal statutory tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Forfeited, weighted average exercise price (in dollars per share)
Note 12 - Financial Information of Parent Company - Statement of Operations (Details)
Note 12 - Financial Information of Parent Company - Statement of Cash Flows (Details)
Note 14 - Concentration of Risk - Schedule of Concentration Risks (Details)
Exercised, weighted average exercise price (in dollars per share)
Note 15 - Segment Reporting - Summary of Segment Information (Details)
Note 16 - Share-based Compensation - Schedule of Restricted Share Activity (Details)
Note 16 - Share-based Compensation (Details)
Note 17 - Commitments and Contingencies - Schedule of Lease Commitments (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Income Tax Jurisdiction [Domain]
Income tax payable
us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
us-gaap_IncreaseDecreaseInInventories
Inventories
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Segment Reporting [Text Block]
Other payables and accrued liabilities
us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
Adjustments to reconcile net loss to net cash provided by operating activities
Award Type [Axis]
Segment Reporting [Table Text Block]
Total Liability
us-gaap_Liabilities
Total Liabilities
Plan Name [Axis]
Plan Name [Domain]
Defined Benefit Plan [Table]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
The 2019 Option Plan [Member]
Relating to the 2019 option plan.
Total Liability and Shareholders’ Equity:
us-gaap_LiabilitiesAndStockholdersEquity
Total Liabilities and shareholders’ equity
Share-based compensation expense
Share-Based Payment Arrangement, Expense
Haiyin International Asset Management Limited and Hywin Asset Management (Hong Kong) Limited [Member]
Relating to Haiyin International Asset Management Limited and Hywin Asset Management (Hong Kong) Limited.
Cash and Cash Equivalent [Table]
Haiyin Insurance (Hong Kong) Co., Limited and Hywin International Insurance Broker Limited [Member]
Relating to Haiyin Insurance (Hong Kong) Co., Limited and Hywin International Insurance Broker Limited.
us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment
us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation
Total Liabilities
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Deposits, prepayments and other current assets
Sales and marketing expenses
Condensed Balance Sheet Statement [Table]
Share-based compensation expenses
Increase (Decrease) in Accounts Payable, Trade
us-gaap_IncreaseDecreaseInAccountsPayableTrade
Lessee, Lease, Description [Table]
Share-Based Payment Arrangement [Text Block]
Changes in operating assets and liabilities
Interest of lease liability
Represents the amount of interest expense attributable to operating leases.
Condensed Cash Flow Statement [Table]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase/(decrease) in cash, cash equivalents
Due to related parties
us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of the year
Cash and cash equivalents at end of the year
Statement [Table]
Discontinued Operations [Member]
Inland Revenue, Hong Kong [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Reverse Stock Split [Member]
The conversion of a reverse stock split where there is a reduction in the shares outstanding.
us-gaap_GainLossOnSaleOfBusiness
Gain on disposal of subsidiaries
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Awarded and unvested (in shares)
Awarded and unvested (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Awarded and unvested, weighted average grant date fair value (in dollars per share)
Awarded and unvested, weighted average grant date fair value (in dollars per share)
Granted (in shares)
Granted, weighted average grant date fair value (in dollars per share)
Forfeited/Cancelled (in shares)
Condensed Income Statement [Table]
Product and Service [Domain]
Product and Service [Axis]
Ownership [Axis]
Ownership [Domain]
Property, Plant, and Equipment, Useful Life (Year)
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Vested, weighted average grant date fair value (in dollars per share)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Vested (in shares)
Vested (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments
Revision of Prior Period [Domain]
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Operating Lease, Weighted Average Discount Rate, Percent
Revision of Prior Period [Axis]
Other payables and accrued liabilities
us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Asset Class [Axis]
2025
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeited (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
us-gaap_OperatingLeaseExpense
Total
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Lessee, Operating Lease, Liability, to be Paid, Year Three
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding and exercisable (in shares)
Outstanding and exercisable (in shares)
2026
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding and exercisable, weighted average exercise price (in dollars per share)
Outstanding and exercisable, weighted average exercise price (in dollars per share)
Commitments and Contingencies Disclosure [Text Block]
Statement [Line Items]
Common Stock, Shares, Issued (in shares)
Common Stock, Shares, Issued
E-Commerce [Member]
Represents the E-Commerce.
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common Stock, Shares, Outstanding (in shares)
Common Stock, Shares, Outstanding (in shares)
Award Type [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Common Stock, Shares Authorized (in shares)
Digital Assets [Member]
Represents all digital assets.
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Proceeds from disposal and maturity of short-term investments
bvc_IncreaseDecreaseInDigitalAssets
Digital assets
Amount of increase (decrease) during the reporting period in the carrying amount of digital assets.
Ordinary shares (US$0.0001 par value; authorized 500,000,000 shares; issued and outstanding 168,000,000 shares as of June 30, 2025; and US$0.0020 par value; authorized 100,000,000 shares; issued and outstanding 8,484,581 shares as of June 30, 2026)
Common Stock, Value, Issued
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxPayable
Income tax payable
Proceeds from issuance of ordinary shares
Fair Value of Financial Instruments, Policy [Policy Text Block]
Cash, Cash Equivalent, and Investment [Table Text Block]
Accounts payable
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Disposal Group Classification [Axis]
Disposal Group Classification [Domain]
us-gaap_ShortTermInvestments
Short term investments
Concentration Risk [Table]
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
Concentration Risk Disclosure [Text Block]
us-gaap_OperatingLeaseImpairmentLoss
Operating Lease, Impairment Loss
Accrued payroll
Related Party [Member]
Significant Accounting Policies [Text Block]
Amortization of right-of-use asset
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: imputed interest
Lease liability
Lease liability, non-current
New Innovation BVI Limited [Member]
Represents the New Innovation BVI Limited
Outstanding and exercisable, weighted average remaining contractual life (Year)
Total
us-gaap_OperatingLeaseLiability
Lease liability
Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain]
BTV-NDR eCommerce LLC [Member]
Represents the BTV-NDR eCommerce LLC.
Freedom Mining LLC [Member]
Represents the Freedom Mining LLC.
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
BitVentures America Inc [Member]
Represents the BitVentures America Inc
New Innovations Limited [Member]
Represents the New Innovations Limited.
Concentration Risk Type [Domain]
Income Tax Jurisdiction, Domestic Federal [Member]
Long-term investment
Statement of Stockholders' Equity [Abstract]
Loss Contingencies [Table]
Statement of Cash Flows [Abstract]
Other comprehensive loss
Equity Components [Axis]
us-gaap_IncreaseDecreaseInOperatingLeaseLiability
Lease liability
Share-Based Payment Arrangement [Policy Text Block]
Equity Component [Domain]
us-gaap_ImpairmentExcludingLessorAssetUnderOperatingLease
Long-Lived Asset, Held and Used, Excluding Lessor Asset under Operating Lease, Impairment Loss
AOCI Attributable to Parent [Member]
Equity [Text Block]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Income Tax Jurisdiction, Foreign [Member]
bvc_UnrecordedUnconditionalPurchaseObligationToBePaidYearTwoToFive
2 to 5 years
Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second to fifth 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). Includes, but is not limited to, lease not yet commenced.
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Property and equipment, net
us-gaap_DirectCostsOfLeasedAndRentedPropertyOrEquipment
Fulfillment and warehouse fees
us-gaap_PropertyPlantAndEquipmentGross
Property, plant and equipment, cost
Expected credit loss
Accounts Receivable, Credit Loss Expense (Reversal)
Electronic Equipment [Member]
Represents the electronic equipment.
Subsequent Event [Table]
Property, Plant and Equipment, Useful Life [Table Text Block]
Tabular disclosure of the useful lives of property, plant and equipment.
Digital Asset Mining Equipment [Member]
Represents the digital asset mining equipment.
Property, Plant, and Equipment [Policy Text Block]
Sale of Stock [Axis]
Share-based compensation recognized in equity
Supplier Finance Program [Table]
Shareholders' Equity:
Disposal Groups, Including Discontinued Operations, Change From Disposal of Subsidiaries [Table Text Block]
The tabular disclosure presenting the gain (loss) from the disposal of a subsidiary.
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Share-Based Payment Arrangement, Option [Member]
us-gaap_AccountsReceivableNet
Due from related parties
Current liabilities:
- Current year
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
(Loss)/ income from operations
Accrued audit and audit-related fees
Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due for accrued audit fees
us-gaap_AccountsReceivableNetCurrent
Accounts receivable, net
Share Consolidation [Member]
Represents the Share Consolidated Plan.
Customer Concentration Risk [Member]
Effect of share consolidation (in dollars per share)
The weighted average fair value at effect of share consolidation for nonvested equity-based awards issued during the period on other than stock (or unit) option plans.
Utilized the unrecognized net losses in prior years
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to Utilized unrecognized net losses during prior years.
Other [Member]
Represents items classified as other.
bvc_CostPackagingAndPreparation
Cost of packing and preparation
Cost of packing and preparation used for good produced and service rendered.
bvc_CostInventory
Cost of inventory
Cost of inventory incurred and directly related to good produced and service rendered.
Lease, Cost [Table Text Block]
bvc_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareConsolidationInPeriod
Effect of share consolidation (in shares)
The number of share consolidation made during the period on other than stock (or unit) option plans.
Compensation and benefits
us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
us-gaap_PaymentsToAcquireHeldToMaturitySecurities
Placement of short term investments
Revenue Benchmark [Member]
Lessee, Leases [Policy Text Block]
Net cash flows used in operating activities
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation
Net cash flows provided by investing activities
Accumulated other comprehensive loss
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Text Block]
The disclosure of deferred costs, capitalized, prepaid, and other assets.
Commission payable
bvc_IncreaseDecreaseInCommissionPayable
Represents the amount of increase (decrease) in commission payable during the period.
Deposits, Prepayments and Other Current Assets
bvc_DepositsPrepaidExpenseAndOtherAssetsCurrent
Represents the amount of deposits, prepaid expenses and other assets classified as current.
General and administrative expenses
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
(Loss)/income before income tax expense
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
Net cash inflow from disposal of subsidiaries
Additional paid-in capital
bvc_PolicyTable
Segment Reporting, Policy [Policy Text Block]
us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Deposits, prepayments and other current assets
Use of Estimates, Policy [Policy Text Block]
Share consolidation (in shares)
Shares Consolidation, Shares
The number of shares consolidated during the period.
Share consolidation
Value of stock consolidated during the period.
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Unrealized losses on short-term investments
Amount of other comprehensive income from continuing operations available for sale securities adjustment net of tax portion attributable to noncontrolling interest.
bvc_ComprehensiveIncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Net (loss)/income and comprehensive loss from continuing operations, net of tax
The amount of comprehensive income loss from continuing operations including portion attributable to noncontrolling interest.
New shares issued
Stock Issued During Period, Value, New Issues
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of property and equipment
Payments to Acquire Property, Plant, and Equipment
Exercise of share-based compensation
Lessee, Operating Leases [Text Block]
New Innovations BVI Limited
Crypto, Digital Assets [Policy Text Block]
Disclosure of accounting policy for crypto digital assets.
Cost of Revenue [Policy Text Block]
Disclosure of accounting policy for the costs of revenue.
Current assets:
bvc_SharesConsolidationUnitShareIssued
Shares Consolidation Unit, Share Issued
The number of shares consolidation units issued during the period.
us-gaap_AssetsCurrent
Total current assets
bvc_ShareConsolidationUnitSharesConverted
Share Consolidation Unit, Shares Converted
The number of share consolidation units converted.
Exercise of share-based compensation (in shares)
Segment gross profit
New shares issued (in shares)
Stock Issued During Period, Shares, New Issues
Credit Loss, Financial Instrument [Policy Text Block]
us-gaap_InterestIncomeShortTermInvestmentOther
Interest Income, Short-Term Investment, Other
Exercised (in shares)
us-gaap_Depreciation
Depreciation
Class of Stock [Domain]
Related and Nonrelated Parties [Axis]
IPO [Member]
us-gaap_TranslationAdjustmentFunctionalToReportingCurrencyNetOfTax
Translation Adjustment Functional to Reporting Currency, Net of Tax
Cash flows from operating activities
Cash flows from investing activities
Cash flows used in operating activities
Net cash provided by/ (used in) operating activities
Cash flows from financing activity
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share
Cash flows from financing activities
Net cash financing activity
Waiver of loan for capital contribution
bvc_DebtRestructuringGainRecognizedInCapitalReserve
The amount of gain recognized in capital reserve as a result of a debt restructuring.
Compensation and benefits
bvc_DisposalGroupIncludingDiscontinuedOperationCompensationAndBenefits
Amount of compensation and benefits expense attributable to disposal group, including, but not limited to, discontinued operation.
Insurance Referral Services [Member]
Represents insurance referral services.
us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Long-Lived Asset, Held and Used, Impairment Loss
Asset Management Business [Member]
Represents the asset management business.
Wealth Management Business [Member]
Represents the wealth management business.
Share Subscription Agreement with Carmel Holdings Limited [Member]
Represents the share subscription agreement with Carmel Holdings Limited.
Commitments and Contingencies, Policy [Policy Text Block]
- Prior year
Amount of prior income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
Asset impairment loss
bvc_DisposalGroupIncludingDiscontinuedOperationAssetImpairmentLoss
Amount of asset impairment loss attributable to disposal group, including, but not limited to, discontinued operation.
Sales and marketing expenses
bvc_DisposalGroupIncludingDiscontinuedOperationSalesAndMarketingExpense
Amount of sales and marketing expense attributable to disposal group, including, but not limited to, discontinued operation.
Overseas Wealth and Asset Management Businesses [Member]
Represents overseas wealth management and asset management businesses.
bvc_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeGainLossOnDisposal
Net income from discontinued operations
Amount after tax of income (loss) from a discontinued operation, not including the gain (loss) on disposal.
bvc_DisposalGroupIncludingDiscontinuedOperationDueFromRelatedParties
Due from related parties
Amount classified as due from related parties attributable to disposal group held for sale or disposed of.
Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis]
Other Income [Policy Text Block]
Disclosure of accounting policy for other income.
bvc_DisposalGroupIncludingDiscontinuedOperationCommissionPayable
Commission payable
Amount classified as commission payable attributable to disposal group held for sale or disposed of.
bvc_DisposalGroupIncludingDiscontinuedOperationIncomeTaxReceivable
Income tax receivable
Amount classified as income tax receivable receivable attributable to disposal group held for sale or disposed of.
Accounting Policies [Abstract]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
bvc_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedPercentageOfOutstandingShares
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized, Percentage of Outstanding Shares
Number of shares authorized for issuance under share-based payment arrangement expressed as a percentage of the total outstanding shares.
Segments [Domain]
The 2020 Plan [Member]
Represents the 2020 Plan.
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
bvc_DisposalGroupIncludingDiscontinuedOperationAssetsNet
Net (liabilities)/ assets
Amount of assets net of liabilities attributable to disposal group held for sale or disposed of.
bvc_DisposalGroupIncludingDiscontinuedOperationDueToRelatedParties
Due to related parties
Amount classified as due to related parties attributable to disposal group held for sale or disposed of.
Segments [Axis]
From continuing operations - Diluted loss per share (in dollars per share)
(Loss)/ income per share from continuing operations, ordinary share - diluted (in dollars per share)
From continuing operations - Basic loss per share (in dollars per share)
(Loss)/ income per share from continuing operations, ordinary share - basic (in dollars per share)
Net loss attributable to shareholders of Santech Holdings Ltd. from continuing operations
us-gaap_IncomeLossFromContinuingOperations
Internal Revenue Service (IRS) [Member]
Income Statement [Abstract]
Cash and Cash Equivalents [Member]
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
(Loss)/ income before income tax expense
From discontinued operations - Diluted loss per share (in dollars per share)
(Loss)/ income per share from discontinued operations, ordinary share - diluted (in dollars per share)
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
From discontinued operations - Basic loss per share (in dollars per share)
(Loss)/ income per share from discontinued operations, ordinary share - basic (in dollars per share)
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Income for the year from discontinued operations, net of income taxes
Income for the year from discontinued operations, net of income taxes
Discontinued operations
Changes in deferred taxes
Income Tax Uncertainties, Policy [Policy Text Block]
Net income for the year
Net loss for the year
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net (loss)/income and comprehensive loss for the year
us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
Within 1 year
Operating cost and expenses
us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income tax expense
us-gaap_CostsAndExpenses
Total operating cost and expenses
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
Income Tax Disclosure [Text Block]
Operating Lease, Lease Not yet Commenced [Member]
Restricted Stock [Member]
us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Deferred Tax Assets, Operating Loss Carryforwards
Accounting Standards Update and Change in Accounting Principle [Table]
Income Tax, Policy [Policy Text Block]
Income tax at federal statutory tax rate
us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense
Other expense, net
Asset impairment loss
Asset, Impairment Loss
us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Total
Supplemental disclosure of non-cash flow information:
General and administrative expenses
us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
us-gaap_ForeignCurrencyExchangeRateTranslation1
Foreign Currency Exchange Rate, Translation
Related and Nonrelated Parties [Domain]
Loss on digital assets
Loss on digital assets
Tax effect of prior-year tax filing difference
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilities
Other payable and accrued liabilities
us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Total Assets
Less: Net assets disposed of
Other income/(expenses)
Statement of Financial Position [Abstract]
us-gaap_NonoperatingIncomeExpense
Total other income/(expenses), net
us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssets
Deposits, prepayments and other current assets
us-gaap_LiabilitiesNoncurrent
Total non-current liabilities
us-gaap_AssetsNoncurrent
Total non-current assets
Non-current assets:
Income taxes paid
us-gaap_DeferredTaxLiabilities
Deferred Tax Liabilities, Net
Supplemental disclosure of cash flow information:
Nonmonetary Transaction Type [Domain]
Nonmonetary Transaction Type [Axis]
dei_DocumentType
Document Type
Document Information [Line Items]
us-gaap_CryptoAssetFairValueCurrent
Digital assets
us-gaap_DefinedContributionPlanCostRecognized
Defined Contribution Plan, Cost
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
dei_DocumentAnnualReport
Document Annual Report
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Operating Lease, Weighted Average Remaining Lease Term
Document Information [Table]
dei_DocumentRegistrationStatement
Document Registration Statement
Dilutive effect of outstanding share options (in shares)
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
dei_DocumentTransitionReport
Document Transition Report
Weighted average number outstanding - diluted (in shares)
Amortization of intangible asset
dei_DocumentFinStmtErrorCorrectionFlag
Document Financial Statement Error Correction [Flag]
dei_DocumentShellCompanyReport
Document Shell Company Report
(Loss)/income per share
Weighted average number outstanding - basic (in shares)
Basic loss per share (in dollars per share)
(Loss)/ income per share from continuing and discontinued operations, ordinary share - basic (in dollars per share)
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
dei_DocumentAccountingStandard
Document Accounting Standard
Effective Income Tax Rate Reconciliation [Table]
Earnings Per Share, Policy [Policy Text Block]
Office Equipment [Member]
Income Tax Jurisdiction [Axis]
dei_IcfrAuditorAttestationFlag
ICFR Auditor Attestation Flag
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
Depreciation and amortization
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
Amendment Flag
Common Stock [Member]
dei_DocumentPeriodEndDate
Document Period End Date
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Legal Entity [Axis]
dei_EntityFileNumber
Entity File Number
Disaggregation of Revenue [Table Text Block]
Disaggregation of Revenue [Table]
Entity [Domain]
Entity Central Index Key
dei_EntityRegistrantName
Entity Registrant Name
dei_EntityWellKnownSeasonedIssuer
Entity Well-known Seasoned Issuer
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
dei_EntityVoluntaryFilers
Entity Voluntary Filers
dei_EntityIncorporationStateCountryCode
Entity Incorporation, State or Country Code
Timing of Transfer of Good or Service [Axis]
Timing of Transfer of Good or Service [Domain]
Current Fiscal Year End Date
dei_EntityFilerCategory
Entity Filer Category
dei_EntityShellCompany
Entity Shell Company
dei_EntityEmergingGrowthCompany
Entity Emerging Growth Company
Entity Small Business
us-gaap_OperatingIncomeLoss
Loss from operations
us-gaap_ImpairmentLongLivedAssetHeldForUseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Address Type [Domain]
Entity Addresses, Address Type [Axis]
Revenues
Revenues
us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents
Cash and cash equivalents
Business Contact [Member]
Net revenues
dei_EntityAddressAddressLine2
Entity Address, Address Line Two
us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Digital assets, exclusive of depreciation
dei_EntityAddressCityOrTown
Entity Address, City or Town
dei_ContactPersonnelEmailAddress
Contact Personnel Email Address
dei_ContactPersonnelName
Contact Personnel Name
Accumulated deficit
Accumulated deficit
dei_EntityAddressAddressLine1
Entity Address, Address Line One
Waiver of loan for capital contribution
dei_CityAreaCode
City Area Code
dei_LocalPhoneNumber
Local Phone Number
dei_EntityAddressCountry
Entity Address, Country
dei_Security12bTitle
Title of 12(b) Security
Cash and Cash Equivalents Disclosure [Text Block]
dei_SecurityExchangeName
Security Exchange Name
dei_TradingSymbol
Trading Symbol
Class of Stock [Axis]
Subsidiaries [Member]
Revenue [Policy Text Block]
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Earnings Per Share [Text Block]
Other current liabilities
ADR [Member]
Weighted average number outstanding:
Liabilities
Assets
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Scenario [Axis]
Scenario [Domain]
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Property, Plant, and Equipment [Table]
Common Stock, Par or Stated Value Per Share (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_GainLossOnTerminationOfLease
Loss on early termination of right-of-use asset
Gain (Loss) on Termination of Lease
Gain (Loss) on Termination of Lease
Basis of Accounting, Policy [Policy Text Block]
Previously Reported [Member]
Other income/(expense), net
Parent Company [Member]
Long-Lived Asset, Class [Axis]
Sale of Stock [Domain]
Total Asset
us-gaap_Assets
Total Assets
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Cash and cash equivalents
Cash and cash equivalents
dei_AuditorFirmId
Auditor Firm ID
Condensed Financial Statements [Table]
dei_AuditorName
Auditor Name
dei_AuditorLocation
Auditor Location
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Net loss attributable to shareholders of Santech Holdings Ltd. from discontinued operations
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Net (loss)/income from continuing operations, net of tax
Diluted loss per share (in dollars per share)
(Loss)/ income per share from continuing and discontinued operations, ordinary share - diluted (in dollars per share)
Customer [Axis]
Asset Class [Domain]
Consolidation, Policy [Policy Text Block]
Wealth Management [Member]
Relating to wealth management.
Disposal Group Name [Domain]
Ordinary Shares [Member]
Relating to ordinary shares.
Santech Global Hong Kong Limited [Member]
Relating to Santech Global Hong Kong Limited.
Revenues
us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Revenue, discontinued operations
Schedule of Subsidiaries [Table Text Block]
Tabular disclosure of the company's subsidiaries.
us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense
Total operating cost and expenses
Shipping and Handling [Member]
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table Text Block]
us-gaap_InventoryNet
Inventories
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted
Gain on disposal of subsidiaries from discontinued operations, net
(Loss)/ gain from disposal of subsidiaries
Disposal Group Name [Axis]
us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Disposal Group, Including Discontinued Operation, Consideration
Discontinued Operations, Policy [Policy Text Block]
Total Shareholders’ Equity:
us-gaap_StockholdersEquity
Total shareholders’ equity
Balance
Balance
Related Party [Policy Text Block]
Represents the company's policy for related parties.
Forfeited/Cancelled, weighted average grant date fair value (in dollars per share)
Stock, Class of Stock [Table]
Award Timing Disclosures [Line Items]
Concentration Risk Benchmark [Axis]
Nature of Operation, Product Information, Concentration of Risk [Table]
Concentration Risk Benchmark [Domain]
Right-of-use asset
Award Timing, How MNPI Considered [Text Block]
Other payables and accrued liabilities
Total other payables and accrued liabilities
ecd_MnpiDiscTimedForCompValFlag
MNPI Disclosure Timed for Compensation Value [Flag]
Property, Plant, and Equipment [Table Text Block]
Asset Management [Member]
Inventory, Policy [Policy Text Block]