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