XML 71 R55.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Commitments and Contingencies - Additional Information (Detail) (USD $) | 1 Months Ended | 6 Months Ended |  | 1 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | 1 Months Ended |  |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2006 Claim | Jun. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2010 Caliper Life Sciences, Inc [Member] sqft | Jun. 30, 2013 Caliper Life Sciences, Inc [Member] | Jan. 31, 2011 Stem Cell Sciences (U.K.) Ltd [Member] sqft | Jun. 30, 2013 Stem Cell Sciences (U.K.) Ltd [Member] | Dec. 31, 2010 BMR-Gateway Boulevard LLC [Member] sqft | Jun. 30, 2013 BMR-Gateway Boulevard LLC [Member] | Dec. 31, 2012 BMR-Gateway Boulevard LLC [Member] | Mar. 31, 2013 Prologis, L.P [Member] sqft | Jun. 30, 2013 Prologis, L.P [Member]
Commitment And Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of industrial revenue bonds |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate for remaining bond series |  | 9.50% |  |  |  |  |  |  |  |  |  |
Outstanding principal |  | 231,000 | 331,000 |  |  |  |  |  |  |  |  |
Period of maturity |  | 2014-08 |  |  |  |  |  |  |  |  |  |
Square feet area of office and lab space under lease |  |  |  | 13,200 |  |  |  | 43,000 |  |  | 18,700 |
Term of lease |  | 15 years |  | 2 years |  |  |  | 11 years 6 months |  |  | 10 years |
Rent over term of lease |  | 1,165,000 |  | 1,081,000 |  |  |  | 17,869,000 |  |  | 3,497,000 |
Lease term expires |  | Jun. 30, 2013 |  |  | Sep. 30, 2013 |  |  |  |  |  |  |
Deferred rent under sublease agreement |  | 28,050 |  |  |  |  |  |  | 1,420,000 | 1,389,000 |  | 361,000
Area of leased space |  |  |  |  |  | 5,000 |  |  |  |  |  |
Area of lease reduced |  |  |  |  |  | 1,900 |  |  |  |  |  |
Rental payments under the existing lease |  |  |  |  |  | 60,000 |  |  |  |  |  |
Number of patients violate claims of Neuralstem's activities | 4 |  |  |  |  |  |  |  |  |  |  |
Annual payments |  |  |  |  |  |  | 50,000 |  |  |  |  |
Litigation costs |  |  |  |  |  |  | 700,000 |  |  |  |  |
Useful life |  |  |  |  |  |  | 14 years |  |  |  |  |
Royalty payments |  |  |  |  |  |  | 600,000 |  |  |  |  |
Reducing lieu of cash payments |  | 50,000 |  |  |  |  |  |  |  |  |  |
Payments creditable against royalties |  | $ 50,000 |  |  |  |  |  |  |  |  |  |

X
- Definition Area Of Facility Land Subject To Lease + References No definition available. + Details
Name: | stem_AreaOfFacilityLandSubjectToLease
Namespace Prefix: | stem_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area Of Leased Space + References No definition available. + Details
Name: | stem_AreaOfLeasedSpace
Namespace Prefix: | stem_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | stem_CommitmentAndContingenciesLineItems
Namespace Prefix: | stem_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expiry Period Of Lease Term + References No definition available. + Details
Name: | stem_ExpiryPeriodOfLeaseTerm
Namespace Prefix: | stem_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Future Payment And Royalty Payment + References No definition available. + Details
Name: | stem_FuturePaymentAndRoyaltyPayment
Namespace Prefix: | stem_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long Term Debt Bond Interest Rate + References No definition available. + Details
Name: | stem_LongTermDebtBondInterestRate
Namespace Prefix: | stem_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maturity Period Of Long Term Debt + References No definition available. + Details
Name: | stem_MaturityPeriodOfLongTermDebt
Namespace Prefix: | stem_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Patients Violate Claims + References No definition available. + Details
Name: | stem_NumberOfPatientsViolateClaims
Namespace Prefix: | stem_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Outstanding Principal Amount Of Long Term Debt + References No definition available. + Details
Name: | stem_OutstandingPrincipalAmountOfLongTermDebt
Namespace Prefix: | stem_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payments Creditable Against Royalties + References No definition available. + Details
Name: | stem_PaymentsCreditableAgainstRoyalties
Namespace Prefix: | stem_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reduced Area Of Lease + References No definition available. + Details
Name: | stem_ReducedAreaOfLease
Namespace Prefix: | stem_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reducing Lieu Of Cash Payments + References No definition available. + Details
Name: | stem_ReducingLieuOfCashPayments
Namespace Prefix: | stem_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Term of operating lease. + References No definition available. + Details
Name: | stem_TermOfOperatingLease
Namespace Prefix: | stem_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707 + Details
Name: | us-gaap_DeferredRentCreditCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of payments made reducing loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualCarryingValuePayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash payments to lessor's for use of assets under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForRent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration