Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Intangible Assets (Narrative) (Details)

v2.4.0.6
Intangible Assets (Narrative) (Details)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Intangible Assets [Abstract]    
Weighted average amortization period for the amortizable intangible assets (months) 37 49