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Long-Term Debt and Conversion to Royalty Obligation (Details) - IDED - Loans payable - USD ($) $ in Millions	Dec. 31, 2021	Mar. 31, 2005
Debt Instrument [Line Items]
Loan available balance		$ 6.0
Outstanding balance	$ 6.0

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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