Revenue - Percentages of Sales by End Market (Details) - End Market - Sales	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Percentage of Sales by End Market [Line Items]
Percentage of sales	100.00%	100.00%	100.00%	100.00%
Manufacturing
Percentage of Sales by End Market [Line Items]
Percentage of sales	68.90%	55.20%	68.50%	61.20%
Non-residential construction
Percentage of Sales by End Market [Line Items]
Percentage of sales	11.40%	10.70%	11.10%	11.40%
Other
Percentage of Sales by End Market [Line Items]
Percentage of sales	19.70%	34.10%	20.40%	27.40%