Regulatory Matters: (Tables)

3 Months Ended

Mar. 31, 2018

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:

(dollars in thousands)	March 31, 2018			December 31, 2017
GSWC
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	$	29,011		$	29,556
Costs deferred for future recovery on Aerojet case	10,510			10,656
Pensions and other post-retirement obligations (Note 8)	32,178			33,019
Derivative unrealized loss (Note 5)	2,625			2,941
Low income rate assistance balancing accounts	5,640			5,972
General rate case memorandum accounts	9,264			10,522
Excess deferred income taxes	(82,680		)	(83,231		)
Flow-through taxes, net	(17,133		)	(17,716		)
Other regulatory assets	15,449			14,875
Various refunds to customers	(9,592		)	(4,552		)
Total	$	(4,728	)	$	2,042