| Document and Entity Information | Nov. 24, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | Amendment This Form 8-K/A is filed as an amendment (the “Amendment”) to the Current Report on Form 8-K filed by ShotSpotter, Inc. (“ShotSpotter”) on November 24, 2020 (the “Current Report”) disclosing that ShotSpotter had completed its previously announced acquisition of LEEDS, LLC, a New Jersey limited liability company (“LEEDS”), pursuant to the terms of a Membership Interest Purchase Agreement, dated as of November 4, 2020, by and among ShotSpotter, LEEDS, and Jorge Abrantes and Daniel Leston. The Amendment is being filed solely for the purpose of including the historical audited and unaudited financial statements of LEEDS and the pro forma combined financial information required by Items 9.01(a) and 9.01(b) of Form 8-K that were excluded from initially-filed report in reliance on the instructions to such items. |
| Document Period End Date | Nov. 24, 2020 |
| Entity Registrant Name | ShotSpotter, Inc. |
| Entity Central Index Key | 0001351636 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Entity File Number | 001-38107 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 47-0949915 |
| Entity Address, Address Line One | 7979 Gateway Blvd. |
| Entity Address, Address Line Two | Suite 210 |
| Entity Address, City or Town | Newark |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94560 |
| City Area Code | 510 |
| Local Phone Number | 794-3100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.005 per share |
| Trading Symbol | SSTI |
| Security Exchange Name | NASDAQ |
