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Equity and Stock-based Compensation (Tables) | 6 Months Ended
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Mar. 31, 2019
Equity [Abstract] |
Share-based Compensation, Stock Options, Activity | The following table summarizes our stock option activity during the six months ended March 31, 2019:
| Options |  | Weighted Average Exercise Price
Outstanding at beginning of period | 1,248,758 |  |  | $ | 7.69 |
Granted | 198,850 |  |  | 5.35 |
Exercised | (11,086 | ) |  | 3.35 |
Forfeited | (258,930 | ) |  | 9.02 |
Outstanding at end of period | 1,177,592 |  |  | $ | 7.04 |
Exercisable at end of period | 914,159 |  |  | $ | 7.50 |
Weighted average fair value of options granted during the period | $ | 3.08 |  |  |
Fair Value Assumptions | The fair value of options was estimated at the applicable grant date using the Black-Scholes option pricing model with the following assumptions:
| Six Months Ended March 31, 2019
Risk free interest rate | 3%
Expected life | 6 years
Dividend rate | 0%
Volatility | 60%

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, 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 (d) -URI http://asc.fasb.org/extlink&oid=109197908&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 (e) -URI http://asc.fasb.org/extlink&oid=109197908&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 (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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