Restructuring (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 160	$ 0	$ 592	$ 0
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges				400
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges				112
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 100
Other Restructuring | Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100