Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Fair Value Measurements (Estimated Fair Value Of Other Financial Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and Cash Equivalents, at Carrying Value $ 22,517 $ 11,505 $ 9,232 $ 79,122
Notes receivable from other business ventures (included in other receivables and other assets) 642 925    
Long-term debt, including current portion, Carrying Amount 242,816 279,735    
Level 1 [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents, Estimated Fair Value 22,517 11,505    
Notes receivable from other business ventures (included in other receivables and other assets) 642 925    
Long-term debt, including current portion, Estimated Fair Value 0 0    
Level 2 [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents, Estimated Fair Value 0 0    
Notes receivable from other business ventures (included in other receivables and other assets) 0 0    
Long-term debt, including current portion, Estimated Fair Value 246,670 283,120    
Level 3 [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents, Estimated Fair Value 0 0    
Notes receivable from other business ventures (included in other receivables and other assets) 0 0    
Long-term debt, including current portion, Estimated Fair Value $ 0 $ 0