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Commitments, Contingent Liabilities and Other Matters (Details 4) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Board Of Directors
    
Executive Agreements    
Number of executives for whom employment agreements is approved 6  
Number of officers having outstanding non-interest bearing relocation home loans 1  
Repayment tenure of non-interest bearing relocation home loans 20 years  
Amount of relocation home loans $ 1.5  
Board Of Directors | Minimum
    
Executive Agreements    
Period of rolling term of employment agreements 1 year  
Board Of Directors | Maximum
    
Executive Agreements    
Period of rolling term of employment agreements 2 years  
Consortium arrangements | Thermal Equipment and Services reportable segment
    
Collaborative Arrangements    
Entity's share of the aggregate contract value on open consortium arrangements 139.3 264.4
Percentage of entity's share of the aggregate contract value, recognized as revenue 87.00% 62.00%
Aggregate contract value on open consortium arrangements 433.8 740.9
Estimated fair value of potential obligation recorded as a liabilities $ 1.7 $ 1.5