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Accounts and Notes Receivable, net - Narrative (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Receivables [Abstract]
Provision for doubtful accounts	$ 0	$ 2,024,000	$ 3,188,000
Allowance for Doubtful Accounts Receivable, Period Increase (Decrease)	$ (1,000,000)	$ (400,000)	$ 2,100,000

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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