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Supplemental Disclosure of Cash Flow Information (Tables)
12 Months Ended
Sep. 30, 2017
Supplemental Disclosure of Cash Flow Information
     Years Ended September 30,  
(in thousands)    2017      2016      2015  

Cash paid during the period for:

        

Income taxes, net

   $ 4,434      $ 22,570      $ 38,265  

Interest

   $ 7,814      $ 7,785      $ 16,950  

Non-cash investing activities:

        

Acquisition of NYC heating oil customer list

   $ —        $ —        $ 886  

Non-cash financing activities:

        

Increase in interest expense—amortization of debt discount on 8.875% Senior Notes

   $ —        $ —        $ 112