Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Schedule of Award Activity (Details)

v3.10.0.1
Stock-based Compensation - Schedule of Award Activity (Details) - $ / shares
shares in Thousands
6 Months Ended
May 18, 2018
Sep. 30, 2018
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2019 2020 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years
Shares    
Granted 341  
Weighted- average Fair Value on Grant Date    
Granted   $ 17.86
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2016 2017 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2018 2019 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2017 2018 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years
Restricted Stock Units (RSUs) [Member] | May 18, 2019 | Long Term Incentive Plan 2019 2020 [Member]    
Shares    
Granted 63  
Restricted Stock Units (RSUs) [Member] | May 18, 2020 | Long Term Incentive Plan 2019 2020 [Member]    
Shares    
Granted 138  
Restricted Stock Units (RSUs) [Member] | May 18, 2021 | Long Term Incentive Plan 2019 2020 [Member]    
Shares    
Granted 140  
Restricted Stock Units, Performance-Based Award [Member] | Long Term Incentive Plan 2016 2017 [Member]    
Shares    
Vested   (173)
Restricted Stock Units, Performance-Based Award [Member] | Long Term Incentive Plan 2018 2019 [Member]    
Shares    
Vested   0
Restricted Stock Units, Performance-Based Award [Member] | Long Term Incentive Plan 2017 2018 [Member]    
Shares    
Vested   0
Restricted Stock Units, Time-Based Award [Member] | Long Term Incentive Plan 2016 2017 [Member]    
Shares    
Vested   (191)
Restricted Stock Units, Time-Based Award [Member] | Long Term Incentive Plan 2018 2019 [Member]    
Shares    
Vested   (72)
Restricted Stock Units, Time-Based Award [Member] | Long Term Incentive Plan 2017 2018 [Member]    
Shares    
Vested   (198)
Restricted Stock    
Shares    
Beginning balance   1,405
Granted   83
Vested   (507)
Forfeited   (11)
Ending balance   970
Weighted- average Fair Value on Grant Date    
Beginning balance   $ 9.82
Granted   25.13
Vested   13.66
Forfeited   6.84
Ending balance   $ 9.16