Business Segments (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Schedule of reporting segments information

Capital additions reflect capital expenditures paid in cash and exclude government-funded capital expenditures for ASUS, property installed by developers and conveyed to GSWC and through May 31, 2011 for CCWC.

	As Of And For The Year Ended December 31, 2013
	GSWC				ASUS		AWR			Consolidated
(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
Operating revenues	$	320,131	$	38,409	$	113,537	$	—		$	472,077
Operating income (loss)	95,932		6,411		16,737		(8		)	119,072
Interest expense, net	20,236		1,436		264		(228		)	21,708
Utility Plant	936,386		40,908		4,183		—			981,477
Depreciation and amortization expense (1)	36,636		2,316		1,138		—			40,090
Income tax expense/(benefit)	30,679		2,455		4,911		(2,262		)	35,783
Capital additions	94,581		2,124		674		—			97,379

	As Of And For The Year Ended December 31, 2012
	GSWC				ASUS		AWR			Consolidated
(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
Operating revenues	$	305,898	$	37,033	$	123,977	$	—		$	466,908
Operating income (loss)	78,104		8,501		24,608		(119		)	111,094
Interest expense, net	19,783		1,533		179		(63		)	21,432
Utility Plant	871,756		41,381		4,654		—			917,791
Depreciation and amortization expense (1)	37,905		2,292		1,188		—			41,385
Income tax expense	24,231		2,269		9,437		8			35,945
Capital additions	62,500		4,331		1,273		—			68,104

	As Of And For The Year Ended December 31, 2011
	GSWC				CCWC			ASUS		AWR				Consolidated
(dollars in thousands)	Water		Electric		Water			Contracts		Parent				AWR
Operating revenues	$	300,450	$	36,275	$	—		$	83,188	$	—			$	419,913
Operating income (loss) (2)	77,017		6,661		(356		)	11,855		(73		)		95,104
Interest expense, net	20,990		1,501		—			372		(41		)		22,822
Utility Plant	852,264		39,681		—			4,555		—				896,500
Depreciation and amortization expense (1)	35,450		2,011		—			888		—				38,349
Income tax expense/(benefit)	24,151		1,820		(145		)	4,431		(181		)		30,076
Income from discontinued operations, net of tax (3)	—		—		1,612			—		2,237			(4)	3,849
Capital additions	73,991		4,447		—			1,843		—				80,281

Schedule of reconciliation of total utility plant (a key figure for rate-making) to total consolidated assets

The following table reconciles total utility plant (a key figure for rate-making) to total consolidated assets (in thousands):

	December 31,
	2013		2012		2011
Total utility plant	$	981,477	$	917,791	$	896,500
Other assets	328,706		363,152		341,862
Total consolidated assets	$	1,310,183	$	1,280,943	$	1,238,362

(1)   Depreciation computed on GSWC’s transportation equipment is recorded in other operating expenses and totaled $877,000, $1.8 million and $2.5 million for the years ended December 31, 2013, 2012 and 2011, respectively.

(2)      Operating income (loss) includes CCWC’s allocated corporate overhead costs that are now primarily at GSWC.

(3)     In accordance with the accounting guidance relating to assets held for sale, Registrant did not record depreciation expense for CCWC in 2012.

(4)      Included in discontinued operations for the year ended December 31, 2011 are direct transaction costs of $449,000 ($217,000 after tax) for legal and consulting services in connection with the sale of CCWC.