| Document and Entity Information | Aug. 24, 2021 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 24, 2021 |
| Entity Registrant Name | Locust Walk Acquisition Corp. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39866 |
| Entity Tax Identification Number | 85-3306396 |
| Entity Address, Address Line One | 200 Clarendon Street, 51st Floor |
| Entity Address, City or Town | Boston |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02116 |
| City Area Code | 415 |
| Local Phone Number | 697-0763 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001828522 |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase one share of Class A Common Stock |
| Trading Symbol | LWACW |
| Security Exchange Name | NASDAQ |
| Capital Units [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A Common Stock and one- third of one Warr |
| Trading Symbol | LWACU |
| Security Exchange Name | NASDAQ |
| Class A And Class B Non Redeemable Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | LWAC |
| Security Exchange Name | NASDAQ |
