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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Income Taxes [Line Items]        
Computed expected tax expense (benefit) $ 1,899 $ (1,487) $ 3,193 $ 251
State income taxes 64 74 127 148
Permanent differences 80 148 90 182
Section 45B credit (1,750) 0 (1,750) 0
Income tax expense (benefit) $ 293 $ (1,265) $ 1,660 $ 581