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Fair Value of Financial Instruments - Carrying Values and the Estimated Fair Values of Debt Financial Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Carrying value, long-term debt $ 282.4 $ 175.7
Senior unsecured notes    
Debt Instrument [Line Items]    
Carrying value, long-term debt 0.0 75.0
Estimated fair value, long-term debt 0.0 77.6
Revolving credit facility    
Debt Instrument [Line Items]    
Carrying value, line of credit 279.4 94.3
Estimated fair value, line of credit 279.4 94.3
Brazilian Real Loan    
Debt Instrument [Line Items]    
Carrying value, long-term debt 0.3 2.0
Estimated fair value, long-term debt 0.3 1.8
Brazilian Real Loan    
Debt Instrument [Line Items]    
Carrying value, long-term debt 2.7 4.3
Estimated fair value, long-term debt 2.4 3.7
Foreign credit facilities    
Debt Instrument [Line Items]    
Carrying value, line of credit 0.0 2.3
Estimated fair value, line of credit 0.0 2.3
Other    
Debt Instrument [Line Items]    
Carrying value, long-term debt 0.3 0.1
Estimated fair value, long-term debt $ 0.3 $ 0.1