Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2014

Regulated Operations [Abstract]

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

Regulatory assets, less regulatory liabilities, included in the consolidated balance sheets are as follows:

	December 31,
(dollars in thousands)	2014			2013
GSWC
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	$	9,369		$	16,345
Base Revenue Requirement Adjustment Mechanism	7,761			8,725
Costs deferred for future recovery on Aerojet case	13,629			14,763
Pensions and other post-retirement obligations (Note 11)	43,426			20,241
Derivative unrealized loss (Note 4)	3,339			—
Flow-through taxes, net (Note 10)	17,612			16,189
Low income rate assistance balancing accounts	9,109			9,979
General rate case memorandum accounts	4,731			15,645
Other regulatory assets	17,487			25,086
Various refunds to customers	(759		)	(4,292		)
Total	$	125,704		$	122,681