Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Finite Lived) (Details)

v2.4.0.6
Intangible Assets (Finite Lived) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
FiniteLivedIntangibleAssetsLineItems      
FiniteLivedIntangibleAssetsGross $ 39,235 $ 35,610  
FiniteLivedIntangibleAssetsAccumulatedAmortization 22,675 19,775  
Net other intangible assets 16,560 15,835 17,717
ComputerSoftwareIntangibleAssetMember
     
FiniteLivedIntangibleAssetsLineItems      
FiniteLivedIntangibleAssetsGross 35,416 30,392  
CustomerRelationshipsMember
     
FiniteLivedIntangibleAssetsLineItems      
FiniteLivedIntangibleAssetsGross 3,036 4,435  
Right Of Way [Member]
     
FiniteLivedIntangibleAssetsLineItems      
FiniteLivedIntangibleAssetsGross $ 783 $ 783