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Subsequent Events (Details) - USD ($) | Nov. 28, 2018 | Nov. 27, 2018 | Mar. 28, 2018 | Sep. 30, 2018 | Sep. 30, 2017
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Subsequent Event [Line Items] |  |  |  |  |
Authorized stock repurchase amount |  |  | $ 4,000,000 |  |
Common stock, par value (dollars per share) |  |  |  | $ 0.01 | $ 0.01
Stock repurchase program period |  |  | 1 year |  |
Subsequent Event |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Authorized stock repurchase amount |  | $ 4,000,000 |  |  |
Stock repurchase program period |  | 1 year |  |  |
Severance payment | $ 864,000 |  |  |  |
Payment of all other amounts due | $ 458,500 |  |  |  |
Time-based stock options (in shares) | 264,167 |  |  |  |
Time-based stock options exercisable (in shares) | 122,500 |  |  |  |
Time-based stock options exercise price (in dollars per share) | $ 7.01 |  |  |  |
Remaining time-based stock options exercisable | 141,667 |  |  |  |
Time-based stock options, exercisable period, following Effective Date | 90 days |  |  |  |

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- Definition Supplemental Unemployment Benefits, Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable + References No definition available. + Details
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- Definition Supplemental Unemployment Benefits, Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price + References No definition available. + Details
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- Definition Supplemental Unemployment Benefits, Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested + References No definition available. + Details
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- Definition Supplemental Unemployment Benefits, Share-Based Compensation Arrangement By Share-Based Payment Award, Remaining Options Exercisable + References No definition available. + Details
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- Definition Supplemental Unemployment Benefits, Share-Based Compensation Arrangement By Share-Based Payment Award, Remaining Options Exercisable, Period + References No definition available. + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Definition Amount of postemployment benefit liabilities classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6410195&loc=d3e80090-111668 + Details
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- Definition Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment. + References No definition available. + Details
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