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DERIVATIVE INSTRUMENTS
9 Months Ended
Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
DERIVATIVE INSTRUMENTS
8. DERIVATIVE INSTRUMENTS
The Company has power purchase contracts at its Roanoke Valley Power Facility (“ROVA”) to manage exposure to power price fluctuations. These contracts cover the period from April 2014 to March 2019 and contracted power prices range from $41.05 to $55.20 per megawatt hour, with a weighted average contract price of $44.00 over the remaining contract lives. The contracts are not designated as hedging instruments, and accordingly their fair value is recognized on the Consolidated Balance Sheets, with changes in fair value recognized in the Consolidated Statement of Operations. Fair value is based on a comparison of contracted prices to projected future market prices which are Level 2 inputs based on the hierarchy defined in the fair value footnote.
The fair value of outstanding derivative instruments not designated as hedging instruments on the accompanying unaudited Consolidated Balance Sheets was as follows (in thousands): 
Derivative Instruments
 
Balance Sheet Location
 
September 30, 2016
 
December 31, 2015
Contracts to purchase power
 
Other current liabilities
 
$
15,121

 
$
13,679

Contracts to purchase power
 
Other liabilities
 
24,043

 
23,656

The effect of derivative instruments not designated as hedging instruments on the accompanying unaudited Consolidated Statements of Operations was as follows (in thousands): 
 
 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
Derivative Instruments
 
Statement of
Operations Location
 
2016
 
2015
 
2016
 
2015
Contracts to purchase power
 
Derivative loss
 
$
(5,442
)
 
$
(5,815
)
 
$
(2,164
)
 
$
(6,717
)