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Supplemental Cash Flow (Tables)
3 Months Ended
Sep. 30, 2021
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Disclosures
Three Months Ended September 30,
(in thousands)20212020
Cash paid during the period for:
Interest$4,966 $11,509 
Income taxes7,986 9,635 
Supplemental disclosure of non-cash information:
Changes in accounts payable related to purchases of property, plant and equipment(800)(15,100)
Changes in notes payable related to purchases of property, plant and equipment— 6,309