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Restructuring (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Jun. 30, 2016
USD ($)
employee
Sep. 30, 2015
USD ($)
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve $ 0 $ 382 $ 651 $ 0 $ 0
Restructuring charge   102 651    
Payments for Restructuring (370) (384)      
Restructuring reversals (6)        
Restructuring foreign currency fluctuation (6) 13      
Q1 2016 Restructuring          
Restructuring Cost and Reserve [Line Items]          
Number of employees eliminated | employee       10  
Q2 2016 Restructuring          
Restructuring Cost and Reserve [Line Items]          
Number of employees eliminated | employee       5  
Employee Termination Costs | Q1 2016 Restructuring          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0 380 480 $ 0 0
Restructuring charge   0 480    
Payments for Restructuring (368) (113)      
Restructuring reversals (6)        
Restructuring foreign currency fluctuation (6) 13      
Employee Termination Costs | Q2 2016 Restructuring          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0 2 0 0 0
Restructuring charge   78 0    
Payments for Restructuring (2) (76)      
Restructuring reversals 0        
Restructuring foreign currency fluctuation 0 0      
Other | Q1 2016 Restructuring          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0 0 171 $ 0 $ 0
Restructuring charge   24 $ 171    
Payments for Restructuring 0 (195)      
Restructuring reversals 0        
Restructuring foreign currency fluctuation $ 0 $ 0