Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments And Hedging Strategies (Fair Values Of Derivative Instruments) (Details)

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Derivative Instruments And Hedging Strategies (Fair Values Of Derivative Instruments) (Details)
$ in Thousands
Jun. 30, 2015
USD ($)
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset $ 731
Derivative Liability 2,471
Options on equities and equity indices  
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset 0
Derivative Liability 1,175
Foreign currency exchange, option and future contracts  
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset 0
Derivative Liability 82
Interest rate swap agreements  
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset 0
Derivative Liability 341
Commodity swap, option and future contracts, exchange traded  
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset 472
Derivative Liability 873
Commodity swap, option and future contracts, non-exchange traded  
Derivative [Line Items]  
Derivative Asset, Fair Value, Gross Asset 259
Derivative Liability $ 0