Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Narrative) (Details)

v2.4.1.9
Derivative Instruments (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Net decreases in the estimated fair values of the derivative liabilities $ 1us-gaap_DerivativeGainLossOnDerivativeNet  
Derivative liabilities   $ 63us-gaap_DerivativeLiabilities