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Revenue Recognition	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition During the three and six months ended June 30, 2021, the Company recognized total revenue under collaborative research and development arrangements of $75,000 and $125,000, respectively, from its affiliated entity Plumbline Life Sciences, Inc. ("PLS") and $198,000 and $519,000, respectively, from various other contracts as a result of performance obligations being satisfied. Of the total revenue recognized during the three and six months ended June 30, 2021, $35,000 and $39,000, respectively, were in deferred revenue as of December 31, 2020.

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- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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