Goodwill and Intangibles (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period	$ 661,991	$ 646,643
Goodwill adjusted/acquired during the period	10,426	14,741
Other, primarily currency translation	758	607
Balance at December 31, 2019	673,175	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
Goodwill adjusted/acquired during the period	(3,393)	9,943
Other, primarily currency translation	758	607
Balance at December 31, 2019	210,999	213,634
Fluid Power Businesses Segment [Member]
Changes in the carrying amount of goodwill by reportable segment
Balance at beginning of period	448,357	443,559
Goodwill adjusted/acquired during the period	13,819	4,798
Other, primarily currency translation	0	0
Balance at December 31, 2019	$ 462,176	$ 448,357