XML 52 R31.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Common Stock (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Equity [Abstract] |
Schedule of Shares of Common Stock Reserved for Future Issuance | The Company has reserved for future issuance the following shares of common stock related to the potential exercise of Pre-Funded Warrants, exercise of stock options, and the employee stock purchase plan:
| December 31, 2021 |
Common stock issuable under pre-funded warrants |  | 2,548,117 |
Options exercisable to purchase common stock |  | 2,032,515 |
Employee Stock Purchase Plan |  | 21,569 |
Total |  | 4,602,201 |

X
- Definition Schedule of shares of common stock reserved for future issuance. + References No definition available. + Details
Name: | sybx_ScheduleOfSharesOfCommonStockReservedForFutureIssuanceTableTextBlock
Namespace Prefix: | sybx_
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