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Fair Value of Financial Instruments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Fair Value of Financial Instruments (Textual) [Abstract]        
Embedded Derivative, Gain (Loss) on Embedded Derivative Total $ 28 $ (57) $ 467 $ (69)
Level 3 [Member]        
Fair Value of Financial Instruments (Textual) [Abstract]        
Embedded Derivative, Gain (Loss) on Embedded Derivative Total $ 28   $ 467  
Percentage Of Invested Assets In Total Investment Portfolio Level3 Recurring 2.50%   2.50%