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Debt And Liquidity (Schedule of Short-Term Debt) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Short-term Debt [Line Items]    
Total Short-Term Debt $ 199,215 $ 188,104
Senior Subordinated Notes    
Short-term Debt [Line Items]    
Total Short-Term Debt 194,440 187,973
Other debt    
Short-term Debt [Line Items]    
Total Short-Term Debt $ 4,775 $ 131