Earnings Per Share - Diluted Shares Calculation (Details) - shares shares in Thousands |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||
Basic shares (in shares) | 32,147 | 31,971 | 32,113 | 31,944 |
Diluted shares (in shares) | 32,726 | 32,375 | 32,113 | 31,944 |
Restricted Stock | ||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||
Shares issuable upon vesting of restricted stock (in shares) | 500 | 352 | 0 | 0 |
Performance Shares | ||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||
Shares issuable upon vesting of restricted stock (in shares) | 0 | 14 | 0 | 0 |
Stock Options | ||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||
Shares issuable upon vesting of restricted stock (in shares) | 79 | 38 | 0 | 0 |