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Equity Transactions - Stock Appreciation Rights Activity (Details) - Stock appreciation rights - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
SARs |  |
Outstanding as of September 30, 2018 (in shares) | 934,205 |
Granted (in shares) | 95,000 |
Exercised (in shares) | (181,009) |
Forfeited (in shares) | (414,614) |
Outstanding as of September 30, 2019 (in shares) | 433,582 | 934,205
Vested and expected to vest as of September 30, 2019 (in shares) | 379,179 |
Exercisable as of September 30, 2019 (in shares) | 143,375 |
Weighted- Average Exercise Price |  |
Outstanding as of September 30, 2018 (in dollars per share) | $ 7.23 |
Granted (in dollars per share) | 6.11 |
Exercised (in dollars per share) | 4.57 |
Forfeited (in dollars per share) | 8.90 |
Outstanding as of September 30, 2019 (in dollars per share) | 6.49 | $ 7.23
Vested and expected to vest as of September 30, 2019 (in dollars per share) | 5.95 |
Exercisable as of September 30, 2019 (in dollars per share) | $ 5.83 |
Weighted- Average Remaining Contractual Term (years) |  |
Outstanding, weighted-average remaining contractual term | 11 months 4 days | 9 months 10 days
Vested and expected to vest as of September 30, 2019, weighted-average remaining contractual term | 11 months 1 day |
Exercisable as of September 30, 2019, weighted average remaining contractual term | 2 months 23 days |
Aggregate Intrinsic Value |  |
Outstanding as of September 30, 2018, aggregate intrinsic value | $ 789 |
Granted, aggregate intrinsic value | 0 |
Exercised, aggregate intrinsic value | 491 |
Forfeited, aggregate intrinsic value | 74 |
Outstanding as of September 30, 2019, aggregate intrinsic value | 748 | $ 789
Vested and expected to vest as of September 30, 2019, aggregate intrinsic value | 748 |
Exercisable as of September 30, 2019, aggregate intrinsic value | $ 316 |

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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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