Revenue Recognition Product Vertical (Tables)

6 Months Ended

Jun. 30, 2018

Product Vertical [Abstract]

Schedule of Product Information [Table Text Block]

Disaggregated revenue by product type follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Fastening Systems	24.6	%	20.5	%	24.4	%	20.7	%
Fluid Power	14.8	%	15.4	%	14.7	%	15.3	%
Specialty Chemicals	12.3	%	14.6	%	12.3	%	14.3	%
Cutting Tools and Abrasives	13.4	%	14.4	%	13.4	%	14.3	%
Electrical	10.8	%	11.8	%	11.0	%	12.1	%
Aftermarket Automotive Supplies	7.8	%	8.8	%	8.2	%	9.1	%
Safety	4.7	%	4.3	%	4.7	%	4.2	%
Welding and Metal Repair	2.1	%	2.1	%	2.0	%	2.2	%
Other	9.5	%	8.1	%	9.3	%	7.8	%
Consolidated Total	100.0	%	100.0	%	100.0	%	100.0	%