| Document And Entity Information | Nov. 09, 2020 |
| Document Information Line Items | |
| Entity Registrant Name | ATLAS TECHNICAL CONSULTANTS, INC. |
| Trading Symbol | ATCX |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Central Index Key | 0001751143 |
| Document Period End Date | Nov. 9, 2020 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38745 |
| Entity Tax Identification Number | 83-0808563 |
| Entity Address, Address Line One | 13215 Bee Cave Parkway |
| Entity Address, Address Line Two | Building B |
| Entity Address, Address Line Three | Suite 230 |
| Entity Address, City or Town | Austin |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78738 |
| City Area Code | (512) |
| Local Phone Number | 851-1501 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, $0.0001 par value per share |
| Security Exchange Name | NASDAQ |
