Intangible Assets, Net - Summary of Identifiable Intangible Asset, Net (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Accumulated Amortization	$ 6,528,000	$ 6,382,000
Intangible asset, Effect of currency translation adjustment	(474,000)	(424,000)
Intangible assets Cost/Fair Value	15,053,000	15,074,000
Intangible assets Impairments		170,000
Intangible assets, net	8,525,000	8,522,000
CDE In- Process Research and Development
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible asset, Cost/Fair Value	723,000	728,000
Indefinite-lived intangible asset, Net	723,000	728,000
Intangible assets Impairments	0
Licenses
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Cost/Fair Value	9,499,000	8,935,000
Finite-lived intangible asset, Accumulated Amortization	3,956,000	3,561,000
Finite-lived intangible asset, Net	5,543,000	5,374,000
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	1,228,000	1,164,000
Finite-lived intangible asset, Net	365,000	429,000
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	1,344,000	1,297,000
Finite-lived intangible asset, Net	$ 2,368,000	2,415,000
Product Rights
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible asset, Cost/Fair Value		530,000
Finite-lived intangible asset, Accumulated Amortization		360,000
Finite-lived intangible asset, Impairments		$ 170,000