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Revenue Recognition and Concentration of Credit Risk - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized from deferred revenue	$ 46	$ 127
Department of Defense | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 3,600	$ 11,400
Department of Defense | Customer Concentration Risk | Accounts Receivable
Disaggregation of Revenue [Line Items]
% of Total Revenue	65.00%	62.00%
CEPI MERS | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 1,900
CEPI MERS | Customer Concentration Risk | Accounts Receivable
Disaggregation of Revenue [Line Items]
% of Total Revenue	34.00%
Advaccine | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Accounts receivable		$ 7,100
Advaccine | Customer Concentration Risk | Accounts Receivable
Disaggregation of Revenue [Line Items]
% of Total Revenue		38.00%

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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