Description of Business	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of BusinessLawson Products, Inc. (“Lawson” or the “Company”) is a North American distributor of products and services to the industrial, commercial, institutional and government maintenance, repair and operations (“MRO”) marketplace. The Company has two reportable segments. The Lawson reportable segment distributes MRO products to customers primarily through a network of sales representatives offering vendor managed inventory ("VMI") service to customers throughout the United States and Canada. The Bolt reportable segment distributes MRO products primarily through its 14 branches located in Western Canada. On August 31, 2020, the Company acquired Partsmaster, a distributor of MRO products. Partsmaster is included in the Lawson reportable segment.