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Organization and Summary of Significant Accounting Policies - Textual (Details) |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 22, 2017 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2019 USD ($) customer shares | Sep. 30, 2018 USD ($) customer shares | Sep. 30, 2019 USD ($) customer segment shares | Sep. 30, 2018 USD ($) customer shares | Dec. 31, 2018 USD ($) customer
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  | 1 |  |
Revenues |  |  | $ 454,507 | $ 262,960 | $ 1,247,908 | $ 608,576 |
Allowance for doubtful accounts receivable |  |  | 0 |  | 0 |  | $ 0
Tax cuts and jobs act, change in alternative minimum tax, income tax benefit | $ 1,001,233 |  |  |  |  |  |
Cash received from income tax refund |  |  |  |  | 506,866 | 0 |
Provision for income taxes |  |  | 0 | $ 0 | 900 | $ 0 |
Unrecognized tax benefits |  |  | 0 |  | 0 |  | 0
Deferred tax assets, net |  |  | $ 6,900,000 |  | $ 6,900,000 |  | $ 4,600,000
Deferred tax assets, valuation allowance coverage, percent |  |  | 100.00% |  | 100.00% |  | 100.00%
Antidilutive securities excluded from computation of earnings per share (in shares) | shares |  |  | 4,006,390 | 4,006,390 | 3,411,890 | 3,411,890 |
Customer Concentration Risk | Revenue |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  |  | 5 | 4 | 8 | 5 |
Customer Concentration Risk | Accounts Receivable |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  |  |  |  | 3 |  | 4
United States | Customer Concentration Risk | Revenue |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  | 100.00% |  | 100.00% |
United States | Customer Concentration Risk | Accounts Receivable |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  | 100.00%
Outside of the United States | Customer Concentration Risk | Revenue |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  |  | 3 |  | 3 |  |
Concentration risk, percentage |  |  | 77.00% |  | 73.60% |  |
Revenues |  |  | $ 351,000 |  | $ 918,000 |  |
Outside of the United States | Customer Concentration Risk | Accounts Receivable |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  |  | 1 |  |  |  |
Concentration risk, percentage |  |  | 79.30% |  |  |  |
Accounts receivable |  |  | $ 332,000 |  | $ 332,000 |  |
DuPont Danisco | Industrial Technology Business |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Proceeds from sales of business |  | $ 75,000,000 |  |  |  |  |

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