Schedule II Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Short-Term Receivables
Movement in Valuation Allowances [Roll Forward]
Valuation Allowances, Balance at Beginning of Year	$ 1,799	$ 3,349	$ 4,366
Valuation Allowances, Additions to Expense	267	476	232
Valuation Allowances, Adjustments to Other Accounts	(83)	195	(45)
Valuation Allowances, Write-offs and Recoveries	(616)	(2,221)	(1,204)
Valuation Allowances, Balance at End of Year	1,367	1,799	3,349
Long-Term Notes Receivable
Movement in Valuation Allowances [Roll Forward]
Valuation Allowances, Balance at Beginning of Year		69	0
Valuation Allowances, Additions to Expense		0	69
Valuation Allowances, Adjustments to Other Accounts		0	0
Valuation Allowances, Write-offs and Recoveries		(69)	0
Valuation Allowances, Balance at End of Year		0	69
Deferred Tax Asset
Movement in Valuation Allowances [Roll Forward]
Valuation Allowances, Balance at Beginning of Year	6,698	5,777	5,132
Valuation Allowances, Additions to Expense	355	1,297	814
Valuation Allowances, Adjustments to Other Accounts	0	0	0
Valuation Allowances, Write-offs and Recoveries	(5,142)	(376)	(169)
Valuation Allowances, Balance at End of Year	$ 1,911	$ 6,698	$ 5,777