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Fair Value Measurements (Summary Of Book Value And Fair Value Of Current And Long-Term Portion Of Loans Payable) (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Fair Value Measurements    
Current portion of loans payable $ 576 $ 521
Long-term portion of loans payable 32,460 32,730
Total of balance outstanding 33,036  
Current portion of loans payable, Fair Value 576 [1]  
Long-term portion of loans payable, Fair Value 32,460 [1]  
Total loans payable $ 33,036 [1]  
[1] Estimated fair value of long-term debt is based on quoted prices for similar liabilities for which significant inputs are observable.