Segment Information (Financial Information by Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Sales	$ 682,965	$ 707,883	$ 2,164,286	$ 2,260,827
Depreciation and amortization	2,274	2,754	6,863	7,594
Operating Income	20,795	21,485	71,435	85,200
Capital expenditures	1,260	4,675	4,463	10,187
North American Distribution [Member]
Segment Reporting Information [Line Items]
Sales	519,502	541,049	1,647,115	1,699,106
Depreciation and amortization	939	935	2,908	2,977
Operating Income	24,973	21,471	73,216	77,501
Capital expenditures	975	3,342	3,697	7,670
International Distribution [Member]
Segment Reporting Information [Line Items]
Sales	174,571	178,038	562,093	594,587
Depreciation and amortization	1,335	1,819	3,955	4,617
Operating Income	(4,178)	14	(1,781)	7,699
Capital expenditures	285	1,333	766	2,517
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales	$ (11,108)	$ (11,204)	$ (44,922)	$ (32,866)