Goodwill and Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period			$ 661,991	$ 646,643	$ 646,643
Goodwill adjusted/acquired during the period			11,274		14,741
Impairment	$ (131,000)		(131,000)
Other, primarily currency translation			(2,770)		607
Balance at March 31, 2020	539,495		539,495		661,991
Service Center Based Distribution Segment [Member]
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period			213,634	203,084	203,084
Goodwill adjusted/acquired during the period			(3,393)		9,943
Impairment			0
Other, primarily currency translation			(2,770)		607
Balance at March 31, 2020	207,471		207,471		213,634
Fluid Power & Flow Control Segment [Member]
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period			448,357	443,559	443,559
Goodwill adjusted/acquired during the period			14,667		4,798
Impairment	(131,000)	$ 0	(131,000)	$ 0
Other, primarily currency translation			0		0
Balance at March 31, 2020	$ 332,024		$ 332,024		$ 448,357