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Supplemental Cash Flow Disclosures (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Supplemental Cash Flow Disclosures [Abstract]        
Cash paid during the period for interest $ 1,139 $ 2,057 $ 3,721 $ 4,307
Cash received during the period for interest 290 299 442 539
Cash paid during the period for income taxes $ 7,891 $ 4,444 $ 8,657 $ 4,891