Revenue Recognition Revenue Recognition (Details 4)	3 Months Ended	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	100.00%	100.00%
Power Transmission [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	25.20%	24.30%
Fluid Power [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	21.50%	21.20%
General Maintenance; Hose Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	18.90%	19.70%
Bearings, Linear & Seals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	19.60%	18.80%
Specialty Flow Control [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	14.80%	16.00%
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	100.00%	100.00%
Service Center Based Distribution Segment [Member] | Power Transmission [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	34.50%	33.80%
Service Center Based Distribution Segment [Member] | Fluid Power [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	13.50%	13.70%
Service Center Based Distribution Segment [Member] | General Maintenance; Hose Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	24.70%	26.00%
Service Center Based Distribution Segment [Member] | Bearings, Linear & Seals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	27.30%	26.50%
Service Center Based Distribution Segment [Member] | Specialty Flow Control [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	0.00%	0.00%
Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	100.00%	100.00%
Fluid Power & Flow Control Segment [Member] | Power Transmission [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	2.30%	1.70%
Fluid Power & Flow Control Segment [Member] | Fluid Power [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	41.30%	39.00%
Fluid Power & Flow Control Segment [Member] | General Maintenance; Hose Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	4.70%	5.00%
Fluid Power & Flow Control Segment [Member] | Bearings, Linear & Seals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	0.40%	0.30%
Fluid Power & Flow Control Segment [Member] | Specialty Flow Control [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Product Line, Percent	51.30%	54.00%