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Employee Benefit Plans (Details 10)
Dec. 31, 2013
Dec. 31, 2012
Asset Category    
Wieghted average asset allocations 100.00% 100.00%
Equity securities
   
Asset Category    
Wieghted average asset allocations 51.00% 54.00%
Fixed income securities
   
Asset Category    
Wieghted average asset allocations 48.00% 45.00%
Cash and equivalents
   
Asset Category    
Wieghted average asset allocations 1.00% 1.00%