Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 14, 2022	Jun. 30, 2021
Document Information Line Items
Entity Registrant Name	ATLAS TECHNICAL CONSULTANTS, INC.
Trading Symbol	ATCX
Document Type	10-K
Current Fiscal Year End Date	--01-01
Entity Public Float			$ 107,511,802
Amendment Flag	false
Entity Central Index Key	0001751143
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-38745
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Auditor Firm ID	248
Auditor Name	GRANT THORNTON LLP
Auditor Location	Houston, Texas
Class A Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		34,706,190
Class B Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		3,333,893