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Organization and Summary of Significant Accounting Policies - Textual (Details) |  |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 27, 2020 USD ($) | Jun. 30, 2020 USD ($) scientist customer | Dec. 31, 2019 USD ($) customer | Dec. 31, 2015 USD ($) | Jun. 30, 2020 USD ($) customer scientist shares | Jun. 30, 2019 USD ($) customer shares | Jun. 30, 2020 USD ($) customer scientist segment shares | Jun. 30, 2019 USD ($) customer shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of scientists working together | scientist |  | 3 |  |  | 3 |  | 3 |
Number of operating segments | segment |  |  |  |  |  |  | 1 |
Revenues |  |  |  |  | $ 524,271 | $ 390,874 | $ 839,643 | $ 793,401
Allowance for doubtful accounts receivable |  | $ 0 | $ 0 |  | 0 |  | 0 |
Income tax benefit, valuation allowance reversal |  | 1,001,233 |  |  | 1,001,233 |  | 1,001,233 |
Cash received from income tax refund |  |  |  |  |  |  | 0 | 506,866
Unrecognized tax benefits |  | 0 |  |  | 0 |  | 0 |
Provision for income taxes |  |  |  |  | 0 | $ 0 | 0 | $ 900
Deferred tax assets, net |  | $ 7,600,000 | $ 7,200,000 |  | $ 7,600,000 |  | $ 7,600,000 |
Deferred tax assets, valuation allowance coverage, percent |  | 100.00% | 100.00% |  | 100.00% |  | 100.00% |
Antidilutive securities excluded from computation of earnings per share (in shares) | shares |  |  |  |  | 4,650,390 | 4,108,390 | 4,650,390 | 4,108,390
Tax Year 2018 |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Cash received from income tax refund |  |  |  |  |  |  | $ 500,000 |
Tax Year 2019 | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Cash received from income tax refund | $ 500,000 |  |  |  |  |  |  |
Customer Concentration Risk | Revenue |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  |  |  |  | 9 | 4 | 10 | 7
Customer Concentration Risk | Accounts Receivable |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Concentration risk, number of customers | customer |  | 8 | 5 |  |  |  |  |
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 |  |  |  |  | 4 | 2 | 5 | 2
Concentration risk, percentage |  |  |  |  | 49.20% | 73.30% | 52.50% | 71.50%
Revenues |  |  |  |  | $ 258,000 | $ 287,000 | $ 441,000 | $ 567,000
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 |  | 3 | 4 |  |  |  |  |
Concentration risk, percentage |  | 55.60% | 69.50% |  |  |  |  |
Accounts receivable |  | $ 289,000 | $ 388,000 |  | $ 289,000 |  | $ 289,000 |
Danisco USA | Industrial Technology Business |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Proceeds from sales of business |  |  |  | $ 75,000,000 |  |  |  |
Contract Research Organizations | Customer Concentration Risk |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 96.90% | 72.70% | 98.00% | 83.40%
Contract Research Organizations | Customer Concentration Risk | Accounts Payable |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Concentration risk, percentage |  | 91.80% | 74.90% |  |  |  |  |
Accounts payable |  | $ 1,050,000 | $ 706,000 |  | $ 1,050,000 |  | $ 1,050,000 |

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