Business Combination - Summary of Company's Shares of Common Stock (Detail) - Common Stock [Member] |
Sep. 14, 2022
shares
|
|---|---|
| Legacy Amprius [Member] | |
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | |
| Common stock | 65,777 |
| PIPE investment [Member] | |
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | |
| Common stock | 2,052 |
| Kensington [Member] | |
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | |
| Common stock | 16,340 |
| Legacy Amprius , PIPE investment and Kensington | |
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | |
| Common stock | 84,169 |