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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($)
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Inventory [Line Items]      
Inventory, net of reserves for excess and obsolete inventory $ 5,300,000 $ 5,500,000  
Inventory reserves (percent) 3.00% 5.00%  
Allowance for doubtful accounts $ 3,800,000 $ 0  
Provision for doubtful accounts and inventory obsolescence 3,700,000 1,000,000 $ 3,900,000
Deferred fees 4,700,000 7,700,000  
Deferred costs $ 3,100,000 $ 9,600,000