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Subsequent Events (Details) - Subsequent Event [Member] $ in Millions | Feb. 08, 2018 USD ($)
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Subsequent Event [Line Items] |
Aggregate offering price of shares authorized for sale per agreement | $ 12
Commission due to HCW upon gross proceeds of sale of stock (percent) | 3.00%

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- Definition Sale Of Stock, Aggregate Offering Amount Authorized Per Agreement + References No definition available. + Details
Name: | clbs_SaleOfStockAggregateOfferingAmountAuthorizedPerAgreement
Namespace Prefix: | clbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Sale Of Stock, Commission On Gross Proceeds Due To Third Party Upon, Percent + References No definition available. + Details
Name: | clbs_SaleOfStockCommissionOnGrossProceedsDueToThirdPartyUponPercent
Namespace Prefix: | clbs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |