Restructuring Costs Related To Sale Of Commercial Product Portfolio (Details) $ in Thousands		3 Months Ended			6 Months Ended
	Mar. 01, 2019 employee	Jun. 30, 2019 USD ($)	May 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of employees terminated or given notice of termination | employee	87
Revenue from contract with customer		$ 0		$ 0	$ 0	$ 0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs expected cost remaining		400			400
Employee Severance, Terminated March 1, 2019 [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs					5,100
Employee Severance, Terminated March 1, 2019 [Member] | Employee Severance [Member] | Income (Loss) From Discontinued Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs					3,900
Employee Severance, Terminated March 1, 2019 [Member] | Employee Severance [Member] | Selling, general and administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs					1,000
Employee Severance, Terminated March 1, 2019 [Member] | Employee Severance [Member] | Research and development [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs					200
Employee Severance, Terminated May 31, 2019 [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs		300	$ 500		500
Acrotech Biopharma LLC [Member] | Service [Member]
Restructuring Cost and Reserve [Line Items]
Revenue from contract with customer		$ 500			$ 700