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Severance, Impairment And Other Charges (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2019
Jun. 30, 2019
Mar. 31, 2016
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2017
Severance, Impairment and Other Charges [Line Items]            
Headcount reduction     11.00%      
Impairment   $ (6,020)   $ (6,020)    
Impairment of intangible assets   $ 1,384        
Accruals - Severance Related       135 $ (13)  
U.S. [Member]            
Severance, Impairment and Other Charges [Line Items]            
Accruals - Severance Related       125 2  
Germany [Member]            
Severance, Impairment and Other Charges [Line Items]            
Accruals - Severance Related       10    
China [Member]            
Severance, Impairment and Other Charges [Line Items]            
Accruals - Severance Related         $ (15)  
Cost Reduction Plan [Member]            
Severance, Impairment and Other Charges [Line Items]            
Cash pre-tax charges       $ 100    
Trade Secrets Case [Member]            
Severance, Impairment and Other Charges [Line Items]            
Accrual for judgment/settlement           $ 675
Net payments due to settlement with defendants $ 66