XML 75 R59.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Effective Income Tax Rate Reconciliation [Line Items]      
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate $ 5,973 $ 6,582 $ 8,316
Income Tax Expense (Benefit) 38,151 $ 5,211 (97,117)
Income Tax Reconciliation Change In Enacted Tax Rate $ 31,333    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 24.53% 35.00%  
Increase Resulting From [Member]      
Effective Income Tax Rate Reconciliation [Line Items]      
Alternative Minimum Tax $ 0 $ 0 0
Income Tax Reconciliation, Nondeductible Expense 1,003 966 1,557
Long-lived Assets 0 0 0
Income Tax Reconciliation, State and Local Income Taxes 1,193 1,003 1,105
Contingent Tax Liabilities 0 0 0
Effective Income Tax Rate Rec Other 183 17 0
Change in valuation allowance 1,761 142 0
Income Tax Reconciliation Change In Enacted Tax Rate 31,333    
Decrease Resulting From [Member]      
Effective Income Tax Rate Reconciliation [Line Items]      
Contingent Tax Liabilities (1,908) (3,499) (96)
Effective Income Tax Rate Rec Other 0 0 988
Change in valuation allowance 0 0 (108,987)
Valuation Allowance Adjustment Acquisition 0 $ 0 $ 0
State deferred true up $ (1,387)