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Significant Accounting Policies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
segment
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting [Abstract]      
Number of operating segments 1    
Net revenues from customers outside the United States $ 0.8 $ 0.7 $ 0.1
Distribution Costs [Abstract]      
Distribution costs 0.9 0.9 1.2
Advertising Costs [Abstract]      
Advertising costs $ 2.1 $ 3.0 $ 0.9