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Commitments and Contingencies - Licensor Expense Reimbursements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Licensor Expense Reimbursements
Commitments and contingencies
Expense for prosecution and maintenance of patent rights	$ 2.1	$ 3.8

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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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No definition available.

+ Details

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- Definition

Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support.

+ References

No definition available.

+ Details

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- Details

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