XML 76 R56.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Warrant Liability - Summary of Changes in Fair Value of Warrant Liability (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, beginning balance |  |  | $ 770,964 |
Change in fair value of warrant liability | $ (5,568,634) | $ (988,367) | (5,846,862) | $ (641,037)
Fair value of warrant liability, ending balance | 591,037 |  | 591,037 |
Series A Warrants [Member] |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, ending balance | 160,000 |  | 160,000 |
Series B Warrants [Member] |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, ending balance | 374,000 |  | 374,000 |
December 2011 Financing [Member] | Series A Warrants [Member] |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, beginning balance |  |  | 511,594 |
Change in fair value of warrant liability |  |  | (454,308) |
Fair value of warrant liability, ending balance | 57,286 |  | 57,286 |
March 2016 Financing [Member] | Series A Warrants [Member] |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, beginning balance |  |  | 1,760,937 |
Change in fair value of warrant liability |  |  | (1,600,713) |
Fair value of warrant liability, ending balance | 160,224 |  | 160,224 |
March 2016 Financing [Member] | Series B Warrants [Member] |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrant liability, beginning balance |  |  | 3,887,140 |
Change in fair value of warrant liability |  |  | (3,513,613) |
Fair value of warrant liability, ending balance | $ 373,527 |  | $ 373,527 |

X
- Definition Fair value of warrant liability. + References No definition available. + Details
Name: | stem_FairValueOfWarrantLiability
Namespace Prefix: | stem_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 25 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
Name: | us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=stem_SeriesAWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=stem_SeriesBWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=stem_DecemberTwoThousandElevenFinancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=stem_MarchTwoThousandSixteenFinancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |