Revenue Recognition Revenue Recognition (Details 1)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	37.00%	37.50%
Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	14.90%	13.70%
Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	10.70%	8.60%
Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	9.20%	11.10%
Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	8.30%	6.40%
Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	6.60%	5.70%
Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.60%	5.10%
Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.90%	4.80%
Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.80%	7.10%
Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%
Service Center Based Distribution Segment [Member] | General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	36.00%	34.80%
Service Center Based Distribution Segment [Member] | Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	9.40%	10.20%
Service Center Based Distribution Segment [Member] | Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	14.10%	11.10%
Service Center Based Distribution Segment [Member] | Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	10.20%	12.40%
Service Center Based Distribution Segment [Member] | Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	10.80%	7.70%
Service Center Based Distribution Segment [Member] | Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.50%	2.80%
Service Center Based Distribution Segment [Member] | Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	7.70%	6.80%
Service Center Based Distribution Segment [Member] | Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.70%	4.90%
Service Center Based Distribution Segment [Member] | Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.60%	9.30%
Service Center Based Distribution Segment [Member] | Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%
Fluid Power & Flow Control Segment [Member] | General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	39.40%	43.70%
Fluid Power & Flow Control Segment [Member] | Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	26.70%	22.10%
Fluid Power & Flow Control Segment [Member] | Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.00%	2.70%
Fluid Power & Flow Control Segment [Member] | Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	7.00%	8.20%
Fluid Power & Flow Control Segment [Member] | Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.90%	3.10%
Fluid Power & Flow Control Segment [Member] | Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	13.30%	12.70%
Fluid Power & Flow Control Segment [Member] | Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.10%	1.00%
Fluid Power & Flow Control Segment [Member] | Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.40%	4.60%
Fluid Power & Flow Control Segment [Member] | Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.20%	1.90%
Fluid Power & Flow Control Segment [Member] | Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%