Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 980,662	$ 840,937	$ 2,749,217	$ 2,340,031
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	856,248	724,617	2,377,223	2,016,488
CANADA
Disaggregation of Revenue [Line Items]
Net sales	70,493	66,146	211,322	180,851
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	53,921	50,174	160,672	142,692
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	658,998	572,892	1,847,087	1,601,866
Service Center Based Distribution Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	541,622	461,945	1,495,198	1,294,643
Service Center Based Distribution Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	70,493	66,146	211,322	180,851
Service Center Based Distribution Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	46,883	44,801	140,567	126,372
Fluid Power & Flow Control Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	321,664	268,045	902,130	738,165
Fluid Power & Flow Control Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	314,626	262,672	882,025	721,845
Fluid Power & Flow Control Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Fluid Power & Flow Control Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 7,038	$ 5,373	$ 20,105	$ 16,320