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Accounts and Notes Receivable, net - Allowance For Doubtful Accounts (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance	$ (1,872)	$ (2,852)	$ (1,872)	$ (2,852)	$ (1,872)	$ (2,852)	$ (1,872)	$ (2,852)	$ (3,293)
Additions	922	(590)	963	(737)	890	(880)	757	980	(2,024)	(3,188)
Write-offs							0	0	2,465
Ending Balance							$ (1,115)	$ (1,872)	$ (2,852)	$ (3,293)

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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