Segment and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012
Segment financial information
Net Sales	$ 610,519	$ 579,574
Operating income for reportable segments	44,318	43,267
Assets used in the business	1,001,767	900,227	962,183
Depreciation and amortization of property	3,022	2,818
Capital expenditures	3,892	7,142
Operating Segments [Member]
Segment financial information
Operating income for reportable segments	44,256	40,630
Service Center Based Distribution [Member]
Segment financial information
Net Sales	497,826	463,857
Operating income for reportable segments	33,720	29,394
Assets used in the business	787,028	681,977
Depreciation and amortization of property	2,564	2,299
Capital expenditures	3,714	6,800
Fluid Power Businesses [Member]
Segment financial information
Net Sales	112,693	115,717
Operating income for reportable segments	10,536	11,236
Assets used in the business	214,739	218,250
Depreciation and amortization of property	458	519
Capital expenditures	$ 178	$ 342