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Commitments And Contingencies (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Commitments And Contingencies [Line Items]      
Rent expense $ 92,000 $ 80,000 $ 73,000
Minimum range of possible payment 0    
Maximum range of possible payment 386,000    
Knoxville Tennessee [Member]
     
Commitments And Contingencies [Line Items]      
Leases rent due per month 6,000    
Denver Colorado [Member]
     
Commitments And Contingencies [Line Items]      
Lease term 38 years    
Number of free months in lease 2 months    
Leases rent due per month 2,700    
Lease due in 2014 29,000    
Lease due in 2015 30,000    
Lease due in 2016 34,000    
Lease due in 2017 $ 6,000