Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2012

Regulatory Matters

Schedule of regulatory assets, less regulatory liabilities in the consolidated balance sheets for continuing operations

	December 31,
(dollars in thousands)	2012			2011
GSWC
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	$	42,574		$	39,112
Base Revenue Requirement Adjustment Mechanism	6,833			4,053
Electric supply cost balancing account	5,558			8,347
Costs deferred for future recovery on Aerojet case	16,030			17,173
Pensions and other post-retirement obligations (Note 11)	56,894			56,960
Derivative unrealized loss (Note 4)	3,060			7,611
Flow-through taxes, net (Note 10)	16,415			17,032
Asset retirement obligations (Note 3)	2,781			2,793
Low income rate assistance balancing accounts	9,119			6,194
Other regulatory assets	24,309			33,173
Various refunds to customers	(7,558		)	(12,491		)
Total	$	176,015		$	179,957