Corporate Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	May 31, 2013
Business Acquisition [Line Items]
Cash, cash equivalents and investments	$ 80,900		$ 80,900
Net loss	10,338	$ 15,498	15,439	$ 19,670
Accumulated deficit	$ 272,583		$ 272,583		$ 257,144
Pieris Pharmaceuticals GmbH
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)						100.00%