CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenues
Water	$ 340,602	$ 347,112	$ 330,637
Electric	39,986	38,345	37,024
Contracted services	110,940	113,396	120,582
Total operating revenues	491,528	498,853	488,243
Operating Expenses
Water purchased	75,939	77,914	74,554
Power purchased for pumping	11,861	11,103	10,134
Groundwater production assessment	19,071	19,412	20,392
Power purchased for resale	15,039	11,240	10,423
Supply cost balancing accounts	(12,000)	(11,421)	(11,803)
Other operation	38,095	34,738	33,236
Administrative and general	86,190	83,547	83,615
Depreciation and amortization	41,315	39,596	36,850
Maintenance	13,392	12,781	15,702
Property and other taxes	22,894	22,522	22,199
ASUS construction	53,171	56,909	62,411
(Gain) loss on sale of assets	(75)	(465)	31
Total operating expenses	364,892	357,876	357,744
Operating Income	126,636	140,977	130,499
Other Income and Expenses
Interest expense	(27,027)	(22,834)	(22,531)
Interest income	2,326	1,493	1,801
Other, net	125	5,134	4,853
Total other income and expenses	(24,576)	(16,207)	(15,877)
Income before income tax expense	102,060	124,770	114,622
Income tax expense	23,664	30,423	28,197
Net Income	$ 78,396	$ 94,347	$ 86,425
Basic Earnings Per Common Share
Weighted Average Number of Shares Outstanding (in shares)	36,955	36,921	36,880
Earnings Per Share, Basic	$ 2.12	$ 2.55	$ 2.34
Fully Diluted Earnings Per Share
Weighted Average Number of Diluted Shares (in shares)	37,039	37,010	36,995
Earnings Per Share, Diluted	$ 2.11	$ 2.55	$ 2.33
Dividends Paid Per Common Share	$ 1.525	$ 1.40	$ 1.28
GSWC
Operating Revenues
Water	$ 340,602	$ 347,112	$ 330,637
Electric	0	0	18,647
Total operating revenues	340,602	347,112	349,284
Operating Expenses
Water purchased	75,939	77,914	74,554
Power purchased for pumping	11,861	11,103	10,134
Groundwater production assessment	19,071	19,412	20,392
Power purchased for resale	0	0	5,010
Supply cost balancing accounts	(8,643)	(11,295)	(11,749)
Other operation	28,117	25,781	25,194
Administrative and general	58,358	55,552	59,385
Depreciation and amortization	34,805	33,384	32,184
Maintenance	9,559	9,056	12,424
Property and other taxes	19,080	19,041	18,860
(Gain) loss on sale of assets	0	(409)	0
Total operating expenses	248,147	239,539	246,388
Operating Income	92,455	107,573	102,896
Other Income and Expenses
Interest expense	(22,742)	(21,474)	(21,495)
Interest income	1,083	428	718
Other, net	(680)	4,783	4,556
Total other income and expenses	(22,339)	(16,263)	(16,221)
Income before income tax expense	70,116	91,310	86,675
Income tax expense	16,346	22,095	21,704
Net Income	$ 53,770	$ 69,215	$ 64,971