Segment and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Total operating income	$ 40,569	$ 33,335	$ 84,887	$ 76,602
Adjustment for:
Intangible amortization			6,207	5,544
Corporate and other expense (income), net	(6,738)	3,361	(9,855)	(2,084)
Interest Expense, net	15	10	40	57
Other (Income) Expense, net	(427)	778	(886)	2,710
Income before income taxes	40,981	32,547	85,733	73,835
Operating Segments [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Total operating income	36,982	39,431	81,239	80,062
Service Center Based Distribution [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Total operating income	28,367	29,280	62,088	58,674
Adjustment for:
Intangible amortization	1,304	841	2,527	1,718
Fluid Power Businesses [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Total operating income	8,615	10,151	19,151	21,388
Adjustment for:
Intangible amortization	$ 1,847	$ 1,894	$ 3,680	$ 3,826