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WARRANTY LIABILITY (Details) - Summary of Changes in Warrant Liability Included in Accrued Liabilities (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Summary of Changes in Warrant Liability Included in Accrued Liabilities [Abstract]    
Balance, beginning of period $ 6,649 $ 8,856
Warranties issued and changes in estimated pre-existing warranties 966 (6)
Actual warranty costs incurred (686) (1,107)
Balance, end of period $ 6,929 $ 7,743