Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 370,785	$ 349,637
Fastening Systems | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Cutting Tools and Abrasives | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Fluid Power | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Specialty Chemicals | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Electrical | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Aftermarket Automotive Supplies | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Safety | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Welding and Metal Repair | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Other | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
Sales [Member] | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	0.00%	0.00%
United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 295,675	$ 279,917
Canada
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 75,110	$ 69,720