Grants and Awards (Narrative) (Details) - USD ($)			3 Months Ended
	Jun. 15, 2020	Mar. 13, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Award [Line Items]
Revenue from grants			$ 1,236,000	$ 1,066,000
Award receivable			$ 1,236,000		$ 2,989,000
Medical Technology Enterprise Consortium [Member]
Award [Line Items]
Revenue from grants	$ 15,000,000.0
Cystic Fibrosis Foundation [Member]
Award [Line Items]
Award receivable		$ 1,000,000.0
Award agreement interruption period		360 days
Maximum [Member] | Cystic Fibrosis Foundation [Member]
Award [Line Items]
Amount of threshold development award		$ 5,000,000.0