Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 01, 2022
Document Information [Line Items]
Entity Central Index Key	0000914156
Entity Registrant Name	UFP TECHNOLOGIES INC
Amendment Flag	true
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2022
Document Type	10-Q/A
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-12648
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
City Area Code	978
Local Phone Number	352-2200
Title of 12(b) Security	Common Stock
Trading Symbol	UFPT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		7,578,605
Amendment Description	UFP Technologies, Inc. (“UFP”) is filing this Amendment No. 1 (this “Amendment”) to its Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, as filed with the Securities and Exchange Commission on November 9, 2022 (the “Original Form 10-Q”), solely for the purposes of amending Part I, Item 1 of the Original Form 10-Q to correct typographical errors appearing in the September 30, 2022 line items regarding (i) Total current assets, Total assets, Total current liabilities, Total liabilities, and Total liabilities and stockholders’ equity in the condensed consolidated balance sheets; and (ii) Accounts receivable-trade and Receivables, net, in Note 5, “Receivables and Allowance for Credit Losses.”   Pursuant to Rule 12b-15 promulgated under the Securities Exchange Act of 1934, as amended, we have repeated the entire text of Part I, Item 1 of the Original Form 10-Q in this Amendment and we have also included, as exhibits, new certifications of the Chief Executive Officer and the Chief Financial Officer required by Sections 302 and 906 of the Sarbanes-Oxley Act of 2002.   Except as described above, no other changes have been made to the Original Form 10-Q, and this Amendment does not amend, update or change any other items or disclosures in the Original Form 10-Q. Further, this Amendment does not reflect subsequent events occurring after the filing date of the Original Form 10-Q or modify or update in any way disclosures in the Original Form 10-Q.