XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.21.2

COMMON STOCK (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Equity [Abstract] |
Common Stock Reserved For Issuance | The Company had reserved shares of common stock for issuance as follows:
| June 30, 2021
Shares reserved for warrants | 12,809,802 |
Options issued and outstanding | 10,357,133
Shares available for future issuance under equity incentive plan | 23,016,754
Total | 46,183,689 |

X
- Definition Common Stock Reserved For Issuance + References No definition available. + Details
Name: | stem_CommonStockReservedForIssuanceTableTextBlock
Namespace Prefix: | stem_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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