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Financial Instruments (Summary Of Fair Value Of Financial Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Investments available-for-sale $ 2,078
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Investments available-for-sale   
Significant Other Observable Inputs (Level 2) [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Investments available-for-sale   
Significant Unobservable Inputs (Level 3) [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Investments available-for-sale $ 2,078