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Revenue Recognition
 6 Months Ended
Jun. 30, 2022
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition During the three and six months ended June 30, 2022, the Company recognized revenue of $625,000 and $625,000, respectively, from the DoD, $6,000 and $15,000, respectively, from its affiliated entity Plumbline Life Sciences, Inc. ("PLS") and $154,000 and $344,000, 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, 2022, $3,700 and $13,700, respectively, was in deferred revenue as of December 31, 2021.