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Stock-based Compensation and Equity Grants (Tables) | 12 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based Compensation Expense | Stock-based compensation expense, shown in the table below, is recorded in general and administrative expenses included in our statement of operations:
|  |  | (in thousands)
|  |  | Year Ended
| Ref |  | September 30,
|  |  | 2017 |  | 2016
DLH employees |  |  | $ | 166 |  |  | $ | 90 |
Non-employee directors | (a) |  | 496 |  |  | 376 |
Total stock option expense |  |  | $ | 662 |  |  | $ | 466 |
Ref (a): Equity grants, in accordance with DLH compensation policy for non-employee directors. Unrecognized stock-based compensation expense
|  |  | (in thousands)
|  |  | Period Ended
|  |  | September 30,
| Ref |  | 2017 |  | 2016
Unrecognized expense for DLH employees | (a) |  | $ | 299 |  |  | $ | 18 |
Unrecognized expense for non-employee directors | (b) |  | — |  |  | 24 |
Total unrecognized expense |  |  | $ | 299 |  |  | $ | 42 |
Ref (a): Compensation expense for the portion of equity awards for which the requisite service has not been rendered is recognized as the requisite service is rendered. The compensation expense for that portion of awards has been based on the grant-date fair value of those awards as calculated for recognition purposes under applicable guidance. For options that vest based on the Company’s common stock achieving and maintaining defined market prices, the Company values the awards with a binomial model that utilizes various probability factors and other criterion in establishing fair value of the grant. The related compensation expense is recognized over the derived service period determined in the valuation. This expense is expected to be recognized within the next 27 months. Ref (b): Unrecognized stock expense related to prior years equity grants of restricted stock to non-employee directors, based on performance criteria, in accordance with DLH compensation policy for non-employee directors.
Stock Option Activity | This amount will change based on the fair market value of the Company’s stock.
|  |  |  |  |  |  | (in years) |  |
|  |  |  |  |  |  | Weighted |  |
|  |  |  |  | Weighted |  | Average |  | (in thousands)
|  |  | (in thousands) |  | Average |  | Remaining |  | Aggregate
|  |  | Number of |  | Exercise |  | Contractual |  | Intrinsic
| Ref |  | Shares |  | Price |  | Term |  | Value
Options outstanding, September 30, 2015 |  |  | 2,324 |  |  | $1.40 |  | 6.8 |  | $ | 3,649 |
Granted | (a) |  | 25 |  |  | $2.80 |  |  |  |  |
Canceled |  |  | (123 | ) |  | $1.40 |  |  |  |  |
Options outstanding, September 30, 2016 |  |  | 2,226 |  |  | $1.40 |  | 5.8 |  | $ | 7,581 |
Granted | (a) |  | 400 |  |  | $5.94 |  |  |  |
Exercised |  |  | (632 | ) |  | $1.28 |  |  |  |
Options outstanding, September 30, 2017 |  |  | 1,994 |  |  | $3.83 |  | 6.4 |  | $ | 8,489 |
Ref (a): Option grants to DLH employees in the fiscal year ended September 30, 2017 were valued using a binomial model, under the following criteria:
| September 30,
| 2017 |  | 2016
Risk free interest rate | 2.46 | % |  | 1.01 | %
Contractual term | 10 years |  |  | 10 years |
Dividend yield | — | % |  | — | %
Expected lives | 10 years |  |  | 10 years |
Expected volatility | 144 | % |  | 106 | %
Fair value per option | $0.93 - $1.47 |  | $2.55
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | Ref (a): Option grants to DLH employees in the fiscal year ended September 30, 2017 were valued using a binomial model, under the following criteria:
| September 30,
| 2017 |  | 2016
Risk free interest rate | 2.46 | % |  | 1.01 | %
Contractual term | 10 years |  |  | 10 years |
Dividend yield | — | % |  | — | %
Expected lives | 10 years |  |  | 10 years |
Expected volatility | 144 | % |  | 106 | %
Fair value per option | $0.93 - $1.47 |  | $2.55
Stock Option Shares Outstanding, Vested and Expected to Vest | Stock options shares outstanding, vested and unvested for the period ended:
|  |  | (in thousands)
|  |  | Number of Shares
|  |  | September 30,
| Ref |  | 2017 |  | 2016
Vested and exercisable | (a) |  | 1,327 |  |  | 1,909 |
Unvested | (b) |  | 667 |  |  | 317 |
Options outstanding |  |  | 1,994 |  |  | 2,226 |
Ref (a): Weighted average exercise price of vested and exercisable shares was $1.45 and $1.48 at September 30, 2017 and 2016, respectively. Aggregate intrinsic value was $6.8 million and $6.4 million at September 30, 2017 and 2016, respectively. Weighted average contractual term remaining was 5.0 years and 6.0 years at September 30, 2017 and 2016, respectively. Ref (b): Certain awards vest upon satisfaction of certain performance criteria.

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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