General form of registration statement for all companies including face-amount certificate companies

Note 2 - Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment, Useful Lives 1 (Details)

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Note 2 - Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment, Useful Lives 1 (Details) - Pieris Pharmaceuticals, Inc. [Member]
Dec. 31, 2023
Laboratory Equipment [Member] | Minimum [Member]  
Property and equipment, useful life (Year) 8 years
Laboratory Equipment [Member] | Maximum [Member]  
Property and equipment, useful life (Year) 14 years
Office Equipment [Member] | Minimum [Member]  
Property and equipment, useful life (Year) 5 years
Office Equipment [Member] | Maximum [Member]  
Property and equipment, useful life (Year) 13 years
Computer Equipment [Member] | Minimum [Member]  
Property and equipment, useful life (Year) 3 years
Computer Equipment [Member] | Maximum [Member]  
Property and equipment, useful life (Year) 7 years