Revenue - Percentages of Sales by Product Line (Details) - Product Line - Sales	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
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	34.10%	33.40%	34.30%	33.20%
Tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.40%	8.50%	8.30%	8.60%
Cutting tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.00%	5.00%	5.00%	5.00%
Hydraulics & pneumatics
Percentage of Sales by Product Line [Line Items]
Percentage of sales	6.60%	6.50%	6.60%	6.40%
Material handling
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.60%	5.50%	5.70%	5.50%
Janitorial supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.10%	8.30%	8.00%	8.20%
Electrical supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.50%	4.30%	4.40%	4.30%
Welding supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	3.90%	3.80%	3.80%	3.80%
Safety Supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	20.50%	21.10%	20.60%	21.20%
Other
Percentage of Sales by Product Line [Line Items]
Percentage of sales	3.30%	3.60%	3.30%	3.80%