Cover	Aug. 05, 2020
Cover [Abstract]
Document Type	8-K
Document Period End Date	Aug. 05, 2020
Entity Registrant Name	LAWSON PRODUCTS, INC.
Amendment Flag	false
Entity Central Index Key	0000703604
Entity Incorporation, State or Country Code	DE
Entity File Number	0-10546
Entity Tax Identification Number	36-2229304
Entity Address, Address Line One	8770 W. Bryn Mawr Ave., Suite 900,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60631
City Area Code	(773)
Local Phone Number	304-5050
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common stock, $1.00 par value
Trading Symbol	LAWS
Security Exchange Name	NASDAQ
Entity Emerging Growth Company	false