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Supplemental Cash Flow Disclosures (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Supplemental Cash Flow Information [Abstract]    
Cash paid during the period for interest $ 4,240 $ 2,582
Cash received during the period for interest 409 152
Cash paid during the period for income taxes $ 16,281 $ 766