Restructuring (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,242	$ 100
Restructuring charges inception-to-date	1,400	1,400
Payments for restructuring activities	972
Liability related to restructuring activities	578		$ 308
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,100	900
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200	400
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 100