Revenue - Percentages of Sales by Product Line (Details) - Product Line - Sales	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Percentage of Sales by Product Line [Line Items]
Percentage of sales	100.00%	100.00%	100.00%	100.00%
Fasteners
Percentage of Sales by Product Line [Line Items]
Percentage of sales	32.60%	34.60%	33.10%	34.40%
Tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.50%	8.20%	8.50%	8.20%
Cutting tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.50%	5.00%	5.40%	5.00%
Hydraulics & pneumatics
Percentage of Sales by Product Line [Line Items]
Percentage of sales	6.80%	6.70%	6.70%	6.60%
Material handling
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.60%	5.70%	5.60%	5.70%
Janitorial supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.30%	8.00%	8.20%	7.90%
Electrical supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.70%	4.30%	4.60%	4.30%
Welding supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.10%	3.80%	4.10%	3.80%
Safety supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	20.70%	20.30%	20.50%	20.70%
Other
Percentage of Sales by Product Line [Line Items]
Percentage of sales	3.20%	3.40%	3.30%	3.40%