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Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2019
Schedule of Income Tax Rate Reconciliation [Line Items]  
Schedule of Effective Income Tax Rate from Continuing Operations [Table Text Block]
 
Three Months Ended June 30,
 
Six Months Ended June 30,
2019
 
2018
 
2019
 
2018
Effective tax rate from continuing operations
(5.9
)%
 
(60.3
)%
 
4.0
%
 
(27.3
)%