Goodwill and Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period	$ 540,594	$ 661,991
Goodwill adjusted/acquired during the period		11,274
Impairment		(131,000)
Other, primarily currency translation	763	(1,671)
Balance at September 30, 2020	541,357	540,594
FCX Performance, Inc
Changes in the carrying amount of goodwill by reportable segment
Balance at September 30, 2020	309,012
Service Center Based Distribution Segment [Member]
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period	208,570	213,634
Goodwill adjusted/acquired during the period		(3,393)
Impairment		0
Other, primarily currency translation	763	(1,671)
Balance at September 30, 2020	209,333	208,570
Fluid Power & Flow Control Segment [Member]
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period	332,024	448,357
Goodwill adjusted/acquired during the period		14,667
Impairment		(131,000)
Other, primarily currency translation	0	0
Balance at September 30, 2020	$ 332,024	332,024
Fluid Power & Flow Control Segment [Member] | FCX Performance, Inc
Changes in the carrying amount of goodwill by reportable segment
Impairment		$ (131,000)