Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Sep. 30, 2017
Income Tax Disclosure [Abstract]          
Income tax expense (benefit) $ 4,312 $ 8,856 $ (18,703) $ 17,318  
Blended rate (as a percent)     24.50%    
Provisional tax benefit change in tax rate     $ 29,921    
Tax benefit change in deferred tax assets     38,010    
Tax expense repatriation of foreign earnings     8,089    
Unrecognized tax benefits 15,292   15,292   $ 7,968
Unrecognized tax benefits that would impact effective tax rate 11,183   11,183   7,968
Decrease reasonably possible in next 12 months 3,525   3,525    
Total penalties and interest accrued $ 2,338   $ 2,338   $ 1,779