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Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Significant Accounting Policies [Line Items]        
Company acquired investment in Proxisafe Ltd       33.30%
Description of cash and cash equivalents original maturities three months or less      
Aggregate foreign currency transaction gain and losses   $ (1.2) $ 2.4  
Significant Accounting Policies (Textual) [Abstract]        
Minimum percentage of ownership in investments for consolidation 50.00%      
Research and development costs 2.1 2.4 1.7  
Advertising cost 1.8 1.8 1.6  
Land and improvements [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 10 years      
Building [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 40 years      
Maximum [Member]
       
Significant Accounting Policies [Line Items]        
Investments in joint ventures 50.00%      
Cash and cash equivalents original maturities 3 months      
Amortization period of intangible assets 20 years      
Aggregate foreign currency transaction gain and losses $ (0.1)      
Maximum [Member] | Building Improvements [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 40 years      
Maximum [Member] | Machinery and equipment [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 10 years      
Minimum [Member]
       
Significant Accounting Policies [Line Items]        
Investments in joint ventures 20.00%      
Amortization period of intangible assets 1 year      
Minimum [Member] | Building Improvements [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 5 years      
Minimum [Member] | Machinery and equipment [Member]
       
Significant Accounting Policies [Line Items]        
Estimated useful lives of Property, Plant and Equipment 3 years      
Blue Sky [Member]
       
Significant Accounting Policies [Line Items]        
Acquisition of shares by company   50.00%    
Belos [Member]
       
Significant Accounting Policies [Line Items]        
Acquisition of shares by company     3.86%  
Ownership interest     100.00%  
Proxisafe [Member]
       
Significant Accounting Policies [Line Items]        
Company acquired investment in Proxisafe Ltd 32.57%