| **Stock-based Compensation, Equity Grants, and Warrants - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands** | 12 Months Ended |
|---------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                               |            |   |
| Total compensation expense                                                                                                      | $ 479           | $ 472 |
| Total unrecognized expense                                                                                                      | 140             | 471 |
| DLH Employees                                                                                                                   |            |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                               |            |   |
| Total unrecognized expense                                                                                                      | 44              | 346 |
| Non-employee Directors                                                                                                          |            |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                               |            |   |
| Total unrecognized expense                                                                                                      | 96              | 125 |
| Selling, General and Administrative Expenses | DLH Employees                                                                    |            |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                               |            |   |
| Total compensation expense                                                                                                      | 302             | 363 |
| Selling, General and Administrative Expenses | Non-employee Directors                                                           |            |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                               |            |   |
| Total compensation expense                                                                                                      | $ 177           | $ 109 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.
+ References
Reference 1: 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.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Unrecognized cost of unvested share-based compensation awards.
+ References
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| X                                                                                                                                             |
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| X                                                                                                                                                                                 |
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