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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Net income (loss) $ (7,588) $ (11,789) $ 43,843 $ 31,624
Other comprehensive income:        
Unrealized gain on pension plan obligation 664 [1] 688 [1] 1,992 [1] 2,064 [1]
Tax effect of unrealized gain on pension plan (270) (281) (812) (842)
Total other comprehensive income 394 407 1,180 1,222
Total comprehensive income (loss) $ (7,194) $ (11,382) $ 45,023 $ 32,846
[1] These items are included in the computation of net periodic pension cost. See Note 10 - Employee Benefit Plan.