XML 33 R20.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivative Instruments (Tables)
 6 Months Ended
Jun. 30, 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 and six months ended June 30, 2018 and 2017:
 
 
For The Three Months Ended June 30,
 
 For The Six Months Ended 
 June 30,
(dollars in thousands)
 
2018
 
2017
 
2018
 
2017
Fair value at beginning of the period
 
$
(2,625
)
 
$
(5,460
)
 
$
(2,941
)
 
$
(4,901
)
Unrealized gain on purchased power contracts
 
915

 
967

 
1,231

 
408

Fair value at end of the period
 
$
(1,710
)
 
$
(4,493
)
 
$
(1,710
)
 
$
(4,493
)