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Stock-based Compensation Plans (Tables) | 3 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Share-based Payment Arrangement, Activity [Table Text Block] |
|  | Number granted |  | Weighted average grant date fair value per instrument |  | Total grant date fair value (in millions)
Restricted stock units |  |  | 162,433 |  |  | $ | 11.26 |  |  | $ | 1.8 |
Employee stock purchase plan instruments |  |  | 39,492 |  |  | 1.97 |  |  | 0.1 |
Phantom Plan awards |  |  | 188,973 |  |  | 11.26 |  |  | 2.1 |
PRSUs: 2020 award |  |  | 58,040 |  |  | 11.26 |  |  | 0.7 |
2019 award |  |  | 102,203 |  |  | 11.26 |  |  | 1.2 |
2018 award |  |  | 44,451 |  |  | 11.26 |  |  | 0.5 |
MRSUs |  |  | 147,213 |  |  | 14.94 |  |  | 2.2 |
|  |  |  |  |  | $ | 8.6 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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