Restructuring Expenses (Details) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
segment
|
|
Q4 2018 Restructuring Plan | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring expenses | $ 1.3 | |
Q1 2018 Restructuring Plan | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring expenses | $ 3.0 | |
2017 Restructuring Plan | ||
Restructuring Cost and Reserve [Line Items] | ||
Number of positions eliminated | segment | 100 | |
Restructuring payments | $ 4.2 | |
2017 Restructuring Plan | Employee severance I Restructuring Cost and Reserve | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring expenses | 3.7 | |
2017 Restructuring Plan | Facility Closing I Restructuring Cost and Reserve | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring expenses | $ 0.6 |