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Basis Of Presentation And Summary Of Significant Accounting Policies (Schedule Of Impact Of Restatement On Consolidated Statement Of Cash Flows) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net income $ (5,104) $ 19,727  
Fair value adjustment (82) 91  
Increase (Decrease) in deferred taxes 3,634 991  
Net cash provided by operating activities $ 16,457 $ (793)  
As Reported [Member]      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net income     $ 38,270
Fair value adjustment     212
Increase (Decrease) in deferred taxes     (1,308)
Net cash provided by operating activities     132,605
Correction [Member]      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net income     25,199
Fair value adjustment     (32,473)
Increase (Decrease) in deferred taxes     7,274
As Restated [Member]      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net income     63,469
Fair value adjustment     (32,685)
Increase (Decrease) in deferred taxes     5,966
Net cash provided by operating activities     $ 132,605