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Convertible Debt At Fair Value (Difference Between Fair Value And Unpaid Principal Balance Of Note) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Mar. 16, 2016
Debt Instrument [Line Items]    
Fair value $ 1,315  
6.25% Convertible Promissory Note [Member]    
Debt Instrument [Line Items]    
Interest rate 6.25% 6.25%
Fair value $ 1,315  
Unpaid principal balance 1,012  
Fair value carrying amount over/(under) unpaid principal $ 303