Accounts Receivable, Net (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, trade, net	$ 50,406	$ 42,197
Accounts receivable, trade, gross	51,194	42,925
Allowance for doubtful accounts receivable, end of year	788	728
Allowance for doubtful accounts receivable, beginning of year re-measured at year end rates	621	902
Allowance reversed to statement of operations re-measured at year end rates	(114)	(47)
Allowance acquired in acquisitions, re-measured at year end rates	131	190
Allowance charged to statement of operations, re-measured at year end rates	50	364
Amount utilized, re-measured at year end rates	100	(681)
Prepaid establishment costs related to Grindrod opportunity		175
Other receivables	51,512	40,408
Total accounts receivable, net	101,918	82,780
Related To Prepayments To Agents In Korea [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 24,500	$ 16,800