Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Estimated Fair Value Of Other Financial Assets And Liabilities) (Details)

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Fair Value Measurements (Estimated Fair Value Of Other Financial Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and Cash Equivalents, at Carrying Value $ 14,940 $ 31,335 $ 27,345 $ 11,505
Notes receivable from other business ventures (included in other receivables and other assets) 97 169    
Long-term debt, including current portion 280,810 282,178    
Level 1 [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents 14,940 31,335    
Notes receivable from other business ventures (included in other receivables and other assets) 97 169    
Long-term debt, including current portion 0 0    
Level 2 [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents 0 0    
Notes receivable from other business ventures (included in other receivables and other assets) 0 0    
Long-term debt, including current portion 299,277 297,399    
Level 3 [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents 0 0    
Notes receivable from other business ventures (included in other receivables and other assets) 0 0    
Long-term debt, including current portion $ 0 $ 0