Intangible Assets, Net - Summary of Identifiable Intangible Asset, Net (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Accumulated Amortization	$ 8,981,000	$ 8,260,000
Intangible asset, Effect of currency translation adjustment	(211,000)	(196,000)
Intangible assets Cost/Fair Value	18,463,000	18,478,000
Intangible assets, net	9,482,000	10,218,000
CDE In- Process Research and Development
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible asset, Cost/Fair Value	728,000	728,000
Indefinite-lived intangible asset, Net	728,000	728,000
Intangible assets Impairments	0
Licenses
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Cost/Fair Value	12,641,000	12,641,000
Finite-lived intangible asset, Accumulated Amortization	5,745,000	5,157,000
Finite-lived intangible asset, Net	6,896,000	7,484,000
Polymed Customer List
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Cost/Fair Value	1,593,000	1,593,000
Finite-lived intangible asset, Accumulated Amortization	1,482,000	1,418,000
Finite-lived intangible asset, Net	111,000	175,000
Polymed Technology
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Cost/Fair Value	3,712,000	3,712,000
Finite-lived intangible asset, Accumulated Amortization	1,754,000	1,685,000
Finite-lived intangible asset, Net	$ 1,958,000	$ 2,027,000