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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, AVAILABLE FOR SALE SECURITIES (Details) (USD $)
 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Schedule of Available-for-sale Securities [Line Items]      
Available-for-sale securities $ 10,700,000 [1] $ 11,700,000 [1]  
Available-for-sale securities, gross unrealized gain (loss) 8,100,000 9,100,000  
Total unrealized gains, net of tax 4,800,000 5,400,000  
Proceeds from sale of available for sale securities 0 482,000 0
Pre-tax gain realized   380,000  
Fair Value, Measurements, Recurring [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Available-for-sale securities 10,672,000 [1] 11,716,000 [1]  
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Available-for-sale securities $ 10,672,000 [1] $ 11,716,000 [1]  
[1] Included in other noncurrent assets on the Consolidated Balance Sheets.