Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting PoliciesThe accompanying unaudited condensed consolidated financial statements of Lawson Products, Inc. (the “Company”) have been prepared in accordance with generally accepted accounting principles for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not contain all disclosures required by generally accepted accounting principles. Reference should be made to the Company’s Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020. In the opinion of the Company, all normal recurring adjustments have been made that are necessary to present fairly the results of operations for the interim periods. Operating results for the three and nine month periods ended September 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Company has two operating segments. The Lawson operating segment distributes maintenance, repair and operations ("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 Supply House Ltd. ("Bolt Supply") operating segment distributes MRO products primarily through its branches located in Western Canada. Bolt Supply had 14 branches in operation at the end of the third quarter 2021. See Note 2 of the 2020 Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for further details of the significant accounting policies of the Company.