Segment and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	$ 33,335	$ 33,056	$ 76,602	$ 67,947
Adjustment for:
Intangible amortization			5,544	5,678
Corporate and other expense (income), net	3,361	(784)	(2,084)	(2,960)
Interest expense, net	10	458	57	1,582
Other expense (Income), net	778	(421)	2,710	(764)
Income Before Income Taxes	32,547	33,019	73,835	67,129
Operating Segments [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	39,431	35,163	80,062	70,665
Service Center Based Distribution [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	29,280	25,288	58,674	51,356
Adjustment for:
Intangible amortization	841	905	1,718	1,686
Fluid Power Businesses [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income	10,151	9,875	21,388	19,309
Adjustment for:
Intangible amortization	$ 1,894	$ 1,986	$ 3,826	$ 3,992