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Shareholders' Equity Activity for stock options and warrants (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) $ / shares $ / warrant shares | Dec. 31, 2014 USD ($) $ / shares $ / warrant shares | Dec. 31, 2013 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ | $ 100 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ | $ 0 | $ 28,600 |
Common Stock Warrants, Shares |  | 3,550,956 |
Weighted Average Exercise Price, Warrants Outstanding | $ / warrant | 13.72 | 14.12 |
Weighted Average Remaining Contractual Term warrant outstanding | 1 year 3 months 4 days |  |
Weighted Average Remaining Contractual Term, Warrants Outstanding |  | 2 years 1 month 13 days |
Aggregate Intrinsic Value, Warrants Outstanding | $ | $ 0 | $ 1,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
Warrants Granted | 0 |  |
Weighted Average Exercise Price, Warrants Granted | $ / shares | $ 0 |  |
Warrants Exercised | 0 |  |
Weighted Average Exercise Price, Warrants Exercised | $ / shares | $ 0 |  |
Warrants Expired | 0 |  |
Weighted Average Exercise Price, Warrants Expired | $ / shares | $ 0 |  |
Warrants Canceled | (336,923) |  |
Weighted Average Exercise Price, Warrants Canceled | $ / shares | $ 17.91 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value | $ | $ 100 |  |
shares, vested and expected to vest | 3,214,033 |  |
Weighted Average Exercise Price, Warrants vested & expected to vest | $ / warrant | 13.72 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 3,214,033 |  |
Weighted Average Exercise Price, Warrants Exercisable | $ / warrant | 13.72 |  |
weighted Average Remaining Contractual Term, warrants vested | 1 year 3 months 4 days |  |
Aggregate Intrinsic Value, Warrants vested and expected to vest | $ | $ 0 |  |
Aggregate Intrinsic Value, Warrants vested | $ | $ 0 |  |
Warrant [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price | $ / shares | $ 0.00 | $ 0.00 | $ 3.71
US Equity Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ / shares | $ 6.46 | $ 9.19 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 6 years 10 months 17 days | 6 years 11 months 5 days |
Common stock, shares, outstanding (shares) | 3,214,033 |  |
Weighted Average Remaining Contractual Term, Warrants Vested and Expect to Vest | 1 year 3 months 4 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | 6,663,480 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ / shares | $ 6.58 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term | 6 years 9 months 15 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | 3,414,388 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares | $ 3.01 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |
Stock Options, Outstanding at December 31, 2011 | 4,427,234 |  |
Stock Options Exercised | 0 |  |
Stock Options Forfeited | (740,372) |  |
Stock Options Expired | (437,770) |  |
Stock Options, Outstanding at September 30, 2012 | 6,663,480 | 4,427,234 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price | $ / shares | $ 7.83 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price | $ / shares | 4.92 |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price | $ / shares | $ 0 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number | 4,837,711 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price | $ / shares | $ 7.46 |  |
Options, Vested, weighted Average Remaining Contractual Term | 6 years 1 month 13 days |  |

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Name: | clbs_StockOptionsActivityAxis=clbs_UsEquityPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |