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Summary of Significant Accounting Policies (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
joint_venture
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Significant Accounting Policies [Line Items]      
Foreign Currency Transaction Gain (Loss), before Tax $ (0.2) $ 0.8 $ 1.5
Royalty Income [Abstract]      
Royalty income 8.3 9.6 11.1
Business Combinations [Abstract]      
Acquisition Costs $ 1.8 2.6 2.6
Capitalized Computer Software [Abstract]      
Software useful life 7 years    
Amortization of capitalized software $ 1.0 2.0 $ 3.4
Accumulated amortization of capitalized software costs $ 31.5 $ 46.0  
Restricted Stock [Member] | Minimum [Member]      
Restricted Stock Plan Performance Based Shares [Abstract]      
Share based compensation vesting period (years) 2 years    
Restricted Stock [Member] | Maximum [Member]      
Restricted Stock Plan Performance Based Shares [Abstract]      
Share based compensation vesting period (years) 4 years    
Restricted Stock Performance Plan [Member] | Minimum [Member]      
Restricted Stock Plan Performance Based Shares [Abstract]      
Plan performance period (years) 1 year    
China [Member]      
Principles of Consolidation [Abstract]      
Number of joint ventures | joint_venture 2    
Ownership of joint ventures (as a percent) 50.00%