Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Unrecognized Compensation Expense Expected to be Recognized in Future Periods) (Details)

v2.4.0.8
Share-Based Compensation (Unrecognized Compensation Expense Expected to be Recognized in Future Periods) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period over which expense is expected to be recognized 1 year 4 months 24 days    
RSUs [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested awards, total compensation cost not yet recognized, share-based awards other than options $ 5,331 $ 6,320 $ 5,748
Period over which expense is expected to be recognized 1 year 6 months    
Cash-settleable RSU awards [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested awards, total compensation cost not yet recognized, share-based awards other than options $ 7,669 $ 2,826 $ 2,498