Segment and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	$ 42,019	$ 38,201	$ 118,621	$ 106,148
Adjustment for:
Intangible amortization			8,455	8,468
Corporate and other expense (income), net	1,471	2,528	(614)	(432)
Interest Expense, net	54	52	111	1,634
Other (Income) Expense, net	(1,887)	(2,645)	823	(3,409)
Income Before Income Taxes	43,852	40,794	117,687	107,923
Operating Segments [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	46,401	43,519	126,462	114,184
Service Center Based Distribution [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	35,910	32,275	94,584	83,631
Adjustment for:
Intangible amortization	1,009	789	2,727	2,475
Fluid Power Businesses [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	10,491	11,244	31,878	30,553
Adjustment for:
Intangible amortization	$ 1,902	$ 2,001	$ 5,728	$ 5,993