XML 33 R20.htm IDEA: XBRL DOCUMENT v3.8.0.1
Derivative Instruments (Tables)
 3 Months Ended
Mar. 31, 2018
GOLDEN STATE WATER COMPANY  
Derivative Instruments, Gain (Loss) [Line Items]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following table presents changes in the fair value of GSWC’s Level 3 derivatives for the three months ended March 31, 2018 and 2017:
 
 
For The Three Months Ended March 31,
(dollars in thousands)
 
2018
 
2017
Fair value at beginning of the period
 
$
(2,941
)
 
$
(4,901
)
Unrealized gain (loss) on purchased power contracts
 
316

 
(559
)
Fair value at end of the period
 
$
(2,625
)
 
$
(5,460
)