XML 79 R65.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Summary of Valuation Allowance) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Valuation Allowance [Line Items]      
Balance at beginning of period $ 38,407 $ 32,828 $ 401
Additions (reductions) to income tax expense (5,555) 6,192 34,184
Write-offs (9,740) (613) (1,757)
Balance at End of Period 23,112 $ 38,407 $ 32,828
deferred tax asset related to asc 606 adoption [Member]      
Valuation Allowance [Line Items]      
Write-offs $ (9,600)