| Document and Entity Information | Oct. 01, 2021 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 1, 2021 |
| Entity File Number | 0-26056 |
| Entity Registrant Name | AUTOSCOPE TECHNOLOGIES CORP |
| Entity Central Index Key | 0000943034 |
| Entity Tax Identification Number | 86-3685595 |
| Entity Incorporation, State or Country Code | MN |
| Entity Address, Address Line One | Spruce Tree Centre, Suite 400 |
| Entity Address, Address Line Two | 1600 University Avenue West |
| Entity Address, City or Town | St. Paul |
| Entity Address, State or Province | MN |
| Entity Address, Postal Zip Code | 55104 |
| City Area Code | (612) |
| Local Phone Number | 438-2363 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | AATC |
| Security Exchange Name | NASDAQ |
| Rights [Member] | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Preferred Stock Purchase Rights |
| Trading Symbol | AATC |
| Security Exchange Name | NASDAQ |
