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Stock-based Compensation and Equity Grants | 12 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based Compensation and Equity Grants | Stock-based compensation and equity grants Stock-based compensation expense Options issued under equity incentive plans were designated as either an incentive stock or a non-statutory stock option. No option was granted with a term of more than 10 years from the date of grant. Exercisability of option awards may depend on achievement of certain performance measures determined by the Compensation Committee of our Board. Shares issued upon option exercise are newly issued shares. As of September 30, 2017, there were 0.5 million shares available for grant under the Company's 2016 Omnibus Equity Incentive Plan. 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 for the year ended September 30, 2017: The aggregate intrinsic value in the table below represents the total pretax intrinsic value (i.e., the difference between the Company’s closing stock price on the last trading day of the period and the exercise price, times the number of shares) that would have been received by the option holders had all option holders exercised their in the money options on those dates. 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
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 The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 + Details
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