Revenue Recognition Revenue Recognition (Details 1)	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	37.50%	38.30%
General Industry [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	34.80%	35.80%
General Industry [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	43.70%	44.00%
Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	13.70%	12.90%
Industrial Machinery [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	10.20%	9.20%
Industrial Machinery [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	22.10%	21.40%
Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	11.10%	10.10%
Metals [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	12.40%	11.10%
Metals [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	8.20%	7.80%
Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	8.60%	8.30%
Food [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	11.10%	10.80%
Food [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.70%	2.50%
Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	7.10%	7.30%
Oil & Gas [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	9.30%	9.60%
Oil & Gas [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.90%	2.10%
Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.70%	7.10%
Chem/Petrochem [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.80%	3.50%
Chem/Petrochem [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	12.70%	15.60%
Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	6.40%	6.90%
Forest Products [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	7.70%	8.70%
Forest Products [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.10%	2.60%
Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.10%	5.00%
Cement & Aggregate [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	6.80%	6.80%
Cement & Aggregate [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.00%	1.00%
Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.80%	4.10%
Transportation [Domain] | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.90%	4.50%
Transportation [Domain] | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.60%	3.00%
Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%
Total | Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%
Total | Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%