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Note 4 Debt Schedule (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2018
Sep. 30, 2017
Debt Instrument [Line Items]    
Non-interest bearing promissory notes $ 17,842 $ 19,863
Total long-term debt 392,842 394,863
Less: Current portion of non-interest bearing promissory notes 3,280 3,416
Long-term debt 14,562 391,447
Secured Notes Due 2019    
Debt Instrument [Line Items]    
Senior secured notes due 2019 375,000 375,000
Current portion of long-term debt $ 375,000 $ 0
Debt Instrument, Maturity Date Jun. 01, 2019