Revenue - Percentages of Sales by Product Line (Details) - Product Line - Sales	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 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	32.10%	34.10%	32.80%	34.30%
Tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.50%	8.40%	8.50%	8.30%
Cutting tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.20%	5.00%	5.30%	5.00%
Hydraulics & pneumatics
Percentage of Sales by Product Line [Line Items]
Percentage of sales	6.70%	6.60%	6.70%	6.60%
Material handling
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.60%	5.60%	5.60%	5.70%
Janitorial supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.50%	8.10%	8.30%	8.00%
Electrical supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.60%	4.50%	4.60%	4.40%
Welding supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.00%	3.90%	4.10%	3.80%
Safety supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	21.40%	20.50%	20.80%	20.60%
Other
Percentage of Sales by Product Line [Line Items]
Percentage of sales	3.40%	3.30%	3.30%	3.30%