Quarterly report pursuant to Section 13 or 15(d)

Derivative Contracts - Derivative Gains (Losses) (Details)

v3.19.2
Derivative Contracts - Derivative Gains (Losses) (Details) - Not Designated as Hedging Instrument - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (loss) $ (388) $ 2,248 $ 27 $ 3,644
Common Stock options/warrants        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (loss) (392) 1,916 (24) 3,587
Forward contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative gain (loss) $ 4 $ 332 $ 51 $ 57