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Income Taxes Reconciliation of Tax Rate (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Income Tax Disclosure [Abstract]        
Income tax expense at statutory rate $ (2,219) $ 766 $ (3,136) $ 2,632
State income taxes (benefits), net of federal tax benefit (150) 231 (158) 526
Deferred tax asset write-off related to share based compensation 46 594 51 626
Increase in valuation allowance 27,949 0 27,949 0
Other, net 37 44 16 88
Income Tax Expense $ 25,663 $ 1,635 $ 24,722 $ 3,872