Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Mar. 15, 2023	Jul. 01, 2022
Document Information [Line Items]
Entity Central Index Key	0000700841
Entity Registrant Name	RCM TECHNOLOGIES, INC.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	1-10245
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	95-1480559
Entity Address, Address Line One	2500 McClellan Avenue, Suite 350
Entity Address, City or Town	Pennsauken
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	08109-4613
City Area Code	856
Local Phone Number	356-4500
Title of 12(b) Security	Common Stock, par value $0.05 per share
Trading Symbol	RCMT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float				$ 116,900,000
Entity Common Stock, Shares Outstanding			9,055,903
Auditor Name	WithumSmith+Brown, PC	Macias Gini & O’Connell LLP
Auditor Location	Red Bank, New Jersey	San Diego, California
Auditor Firm ID	100	324