Segment and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Segment financial information
Net sales	$ 581,949	$ 589,517	$ 1,187,254	$ 1,200,036
Operating income for reportable segments	39,837	40,569	79,376	84,887
Assets used in business	1,074,159	1,037,626	1,074,159	1,037,626	1,058,706
Depreciation and amortization of property	3,361	3,014	6,792	6,036
Capital expenditures	2,555	2,951	4,126	6,843
Operating Segments [Member]
Segment financial information
Operating income for reportable segments	35,933	36,982	73,762	81,239
Service Center Based Distribution [Member]
Segment financial information
Net sales	465,955	480,476	958,027	978,302
Operating income for reportable segments	25,569	28,367	53,941	62,088
Assets used in business	864,996	834,839	864,996	834,839
Depreciation and amortization of property	2,988	2,565	5,987	5,129
Capital expenditures	2,340	2,880	3,734	6,594
Fluid Power Businesses [Member]
Segment financial information
Net sales	115,994	109,041	229,227	221,734
Operating income for reportable segments	10,364	8,615	19,821	19,151
Assets used in business	209,163	202,787	209,163	202,787
Depreciation and amortization of property	373	449	805	907
Capital expenditures	$ 215	$ 71	$ 392	$ 249