Segment Information 1 (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	$ 88,989	$ 233,788	$ 225,827
Adjustments for:
Intangible amortization	41,553	41,883	32,065
Goodwill and intangible impairment	131,000
Goodwill and intangible impairment		31,594	0
Operating income	88,989	233,788	225,827
Interest expense, net	36,535	40,188	23,485
Other income, net	(2,782)	(881)	(2,376)
Income before income taxes	55,236	194,481	204,718
Reportable Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	321,514	367,071	321,497
Adjustments for:
Operating income	321,514	367,071	321,497
Service Center Based Distribution Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	211,667	254,954	238,322
Adjustments for:
Intangible amortization	12,385	13,639	17,375
Goodwill and intangible impairment	0
Goodwill and intangible impairment	0	31,594	0
Operating income	211,667	254,954	238,322
Fluid Power & Flow Control Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	109,847	112,117	83,175
Adjustments for:
Intangible amortization	29,168	28,244	14,690
Goodwill and intangible impairment	131,000	0	0
Operating income	109,847	112,117	83,175
Corporate and Other [Member]
Adjustments for:
Corporate and other expense, net	$ 59,972	$ 59,806	$ 63,605