Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2023	Feb. 23, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-12648
Entity Registrant Name	UFP Technologies, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2314970
Entity Address, Address Line One	100 Hale Street
Entity Address, City or Town	Newburyport
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01950-3504
City Area Code	978
Local Phone Number	352-2200
Title of 12(b) Security	Common Stock
Trading Symbol	UFPT
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	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1,383,892,824
Entity Common Stock, Shares Outstanding (in shares)		7,641,883
Auditor Firm ID	248
Auditor Name	GRANT THORNTON LLP
Auditor Location	Boston, Massachusetts
Entity Central Index Key	0000914156
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false