Segment and Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Segment financial information
Net sales	$ 633,172	$ 679,994	$ 1,885,422	$ 2,074,021
Operating income for reportable segments	(33,032)	43,772	46,356	136,744
Assets used in business	1,334,339	1,466,153	1,334,339	1,466,153	$ 1,432,556
Depreciation and amortization of property	4,031	4,461	12,041	12,792
Capital expenditures	3,704	3,203	9,441	11,009
Operating Segments [Member]
Segment financial information
Operating income for reportable segments	32,166	45,539	108,475	142,811
Service Center Based Distribution [Member]
Segment financial information
Net sales	524,074	557,088	1,565,587	1,701,722
Operating income for reportable segments	22,465	33,788	79,767	105,903
Assets used in business	1,124,228	1,256,266	1,124,228	1,256,266
Depreciation and amortization of property	3,710	4,129	11,023	11,741
Capital expenditures	3,472	2,801	8,783	9,875
Fluid Power Businesses [Member]
Segment financial information
Net sales	109,098	122,906	319,835	372,299
Operating income for reportable segments	9,701	11,751	28,708	36,908
Assets used in business	210,111	209,887	210,111	209,887
Depreciation and amortization of property	321	332	1,018	1,051
Capital expenditures	$ 232	$ 402	$ 658	$ 1,134