Name:	btcm_CryptocurrenciesAcquiredInConnectionWithBusinessCombination
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of cryptocurrencies borrowed.

No definition available.

Name:	btcm_CryptocurrenciesBorrowed
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of cryptocurrencies mined.

No definition available.

Name:	btcm_CryptocurrenciesMined
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of cryptocurrencies paid in connection with asset acquisition in non-cash investing and financing activities.

No definition available.

Name:	btcm_CryptocurrenciesPaidInConnectionWithAssetAcquisition
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The carrying value of cryptocurrency assets, classified as current.

No definition available.

Name:	btcm_CryptocurrencyAssetsCurrent
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of cryptocurrency to be distributed for promotion activities on behalf of a third party in non-cash investing and financing activities.

No definition available.

Name:	btcm_CryptocurrencyToBeDistributedForPromotionActivitiesOnBehalfOfThirdParty
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of impairment of cryptocurrencies.

No definition available.

Name:	btcm_ImpairmentOfCryptocurrencies
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of deposits received, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

No definition available.

Name:	btcm_IndefiniteLivedIntangibleAssetsExcludingGoodwillDepositsReceived
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of distribution of assets pool participants, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

No definition available.

Name:	btcm_IndefiniteLivedIntangibleAssetsExcludingGoodwillDistributionToPoolParticipants
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of payment of service expense and non-current assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

No definition available.

Name:	btcm_IndefiniteLivedIntangibleAssetsExcludingGoodwillPaymentOfServiceExpensesAndNoncurrentAssets
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of repayment of cryptocurrencies borrowing, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

No definition available.

Name:	btcm_IndefiniteLivedIntangibleAssetsExcludingGoodwillRepaymentOfCryptocurrenciesBorrowing
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of other payment , excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

No definition available.

Name:	btcm_IndefiniteLivedIntangibleAssetsOtherPayments
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of receipts from issuance of ordinary shares for private placement.

No definition available.

Name:	btcm_ReceiptsFromIssuanceOfOrdinarySharesForPrivatePlacement
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The cash outflow for Repayment of deposit in cryptocurrencies.

No definition available.

Name:	btcm_RepaymentOfDepositInCryptocurrencies
Namespace Prefix:	btcm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Name:	us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of divestiture of an asset lacking physical substance and having a projected indefinite period of benefit to fair value. Excludes financial assets and goodwill.

No definition available.