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Fair Value Measurements (Fair Value Measurements On A Recurring Basis) (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Carrying amount $ 1,505,000 $ 1,102,000 $ 5,476,000
Treasury bills, fair value 5,227,000 5,248,000  
Available for sale Securities 7,945,000 8,925,000  
Small Cap Technology Sector [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Available-for-sale Securities, Carrying amount 2,718,000 3,677,000  
Available for sale Securities 2,718,000 3,677,000  
Small Cap Technology Sector [Member] | Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Available for sale Securities 2,718,000 3,677,000  
Small Cap Technology Sector [Member] | Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Available for sale Securities 0 0  
Small Cap Technology Sector [Member] | Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Available for sale Securities 0 0  
Money Market [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Carrying amount 540,000 804,000  
Cash and cash equivalents, Fair Value 540,000 804,000  
Money Market [Member] | Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 540,000 804,000  
Money Market [Member] | Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 0 0  
Money Market [Member] | Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 0 0  
Commercial Paper [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Carrying amount 601,000 200,000  
Cash and cash equivalents, Fair Value 601,000 200,000  
Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 601,000 200,000  
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 0 0  
Commercial Paper [Member] | Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents, Fair Value 0 0  
Treasury Bills [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Treasury bills, carrying value 5,227,000 5,248,000  
Treasury bills, fair value 5,227,000 5,248,000  
Treasury Bills [Member] | Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Treasury bills, fair value 5,227,000 5,248,000  
Treasury Bills [Member] | Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Treasury bills, fair value 0 0  
Treasury Bills [Member] | Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Treasury bills, fair value $ 0 $ 0