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Supplemental Cash Flow Information
3 Months Ended
Sep. 30, 2018
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information

15. Supplemental cash flow information

      The following table presents supplemental cash flow disclosures for the three months ended September 30, 2018 and 2017:

        Three months ended
        September 30,
        2018   2017
    Cash received from interest $ 2,077 $ 5,286
    Cash paid for interest $ 3,066 $ 2,088
    Cash paid for income taxes $ 1,343 $ 2,036