XML 32 R22.htm IDEA: XBRL DOCUMENT
v3.21.1

Stockholder's equity (deficit) (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Stockholder’s equity (deficit) |
Schedule of common stock reserved for issuance |
|  | March 31, 2021 |  | December 31, 2020
Options outstanding under the 2018 Stock Option and Grant Plan |  | 2,119,349 |  | 2,148,019
Options outstanding under the 2019 Stock Option and Incentive Plan |  | 1,758,356 |  | 1,585,293
Options available for future grant |  | 3,344,146 |  | 2,127,544
2019 Employee Stock Purchase Plan |  | 891,379 |  | 543,963
Total |  | 8,113,230 |  | 6,404,819
Summary of restricted stock activity |
|  |  |  | Grant-Date Fair
|  | Number of Shares |  | Value
Unvested restricted common stock as of December 31, 2020 |  | 33,614 |  |  | 0.62
Shares vesting |  | (14,889) |  |  | 0.62
Unvested restricted common stock as of March 31, 2021 |  | 18,725 |  | $ | 0.62

X
- Definition Tabular disclosure of reserved shares of common stock, on an as-if converted basis. + References No definition available. + Details
Name: | akro_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock
Namespace Prefix: | akro_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in restricted stock units (RSUs). + References No definition available. + Details
Name: | us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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