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Restructuring Charges, Net of Reversals and Impairment (Narratives) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Restructuring Cost And Reserve [Line Items]      
Restructuring liabilities $ 2,137 $ 5,323  
Restructuring charges, net of reversals and impairment 6,137   $ 808
Severance and benefits charges 2,200    
Cash payments 3,608    
Reduction-in-force      
Restructuring Cost And Reserve [Line Items]      
Additional severance cost   $ 2,200  
Cash payments 3,600    
Non-Cancelable Lease Payments      
Restructuring Cost And Reserve [Line Items]      
Charges for changes to estimates for accrued lease costs $ 3,900