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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
One-time transition tax on accumulated foreign earnings, income tax expense (benefit)           $ 9,600  
One-time transition tax on accumulated foreign earnings, income tax expense (benefit), measurement period     $ (200)        
Remeasurement of deferred tax asset and liabilities, income tax expense (benefit)           $ 1,600  
GILTI tax expense       $ 100 $ 400    
U.S. statutory rate       21.00% 21.00% 28.00%  
Valuation allowance, amount $ 9,195 $ 4,447   $ 9,195 $ 4,447    
Net tax expense due to stock award settlements       100 100 $ 1,000  
Gross unrecognized tax benefits 1,156 1,234   1,156 1,234 1,703 $ 1,826
Unrecognized tax benefits that would impact effective tax rate if recognized 900     900      
Unrecognized tax benefits, period increase       (100)      
Income tax penalties and interest accrued 1,100 1,000   1,100 1,000 1,200  
Expense (benefit) for settlements and unusual provisions (2,800) $ (3,100)          
Tax credit, amount 3,700     1,419 $ 1,324 $ 1,825  
Foreign Currency Translation Adjustment [Member]              
Valuation allowance, amount 2,700     2,700      
Domestic Tax Authority [Member]              
Operating loss carry forwards 1,800     1,800      
Operating loss carry forwards, valuation allowance 400     400      
State and Local [Member]              
Operating loss carry forwards 2,000     2,000      
Tax credit carry forwards 2,600     2,600      
Operating loss carry forwards, valuation allowance 100     100      
Valuation allowance, amount 300     300      
Foreign [Member]              
Operating loss carry forwards 8,200     8,200      
Tax credit carry forwards 100     100      
Operating loss carry forwards, valuation allowance 300     300      
Valuation allowance, amount 100     100      
Withholding Tax Credits [Member]              
Tax credit carry forwards 4,500     4,500      
Valuation allowance, amount $ 4,500     $ 4,500