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Supplemental Cash Flow Disclosures (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 15, 2015
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Debt Instrument [Line Items]          
Cash paid during the period for interest   $ 29,176 $ 7,291 $ 65,412 $ 27,897
Cash received during the period for interest   2,870 740 3,412 3,365
Cash paid during the period for income taxes   5,049 $ 7,868 $ 21,515 $ 20,811
Investment income received from income distribution by cost basis investments   $ 2,100      
Senior Notes | Unsecured Debt          
Debt Instrument [Line Items]          
Interest paid $ 22,500