Annual report pursuant to Section 13 and 15(d)

SUPPLEMENTAL CASH FLOW INFORMATION (Details)

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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Current assets:      
Accounts receivable $ (790) $ (7,045) $ (10,632)
Inventories (2,869) (2,289) 10,453
Other current assets (16,293) 4,447 12,434
Total change in current assets (19,952) (4,887) 12,255
Current liabilities:      
Trade accounts payable 2,516 5,672 (11,083)
Accrued compensation (10,940) (2,469) 147
Accrued income taxes (9,973) 5,054 4,079
Other current liabilities 28,415 2,414 8,317
Total change in current liabilities 10,018 10,671 1,460
Net change $ (9,934) $ 5,784 $ 13,715