Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Narrative) (Details)

v2.4.0.6
Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Intangible Assets [Abstract]        
Impairment charge $ 2.2      
Fully amortized definite-lived intangible assets expired   5.6    
Definite-lived intangible assets amortization expense   $ 0.4 $ 0.6 $ 0.6