XML 31 R18.htm IDEA: XBRL DOCUMENT v3.4.0.3
Derivative Instruments (Tables)
 3 Months Ended
Mar. 31, 2016
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, 2016 and 2015:
(dollars in thousands)
 
2016
 
2015
Fair value at beginning of the period
 
$
(7,053
)
 
$
(3,339
)
Unrealized loss on purchased power contracts
 
(192
)
 
(2,837
)
Fair value at end of the period
 
$
(7,245
)
 
$
(6,176
)