CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Regulated utility plant, at cost
Water	$ 2,006,468	$ 1,898,817
Electric	133,815	116,472
Total	2,140,283	2,015,289
Non-regulated utility property, at cost	38,066	37,064
Total utility plant, at cost	2,178,349	2,052,353
Less — accumulated depreciation	(606,231)	(594,264)
Utility plant before construction work in progress	1,572,118	1,458,089
Construction work in progress	181,648	167,915
Net utility plant	1,753,766	1,626,004
Other Property and Investments
Goodwill	1,116	1,116
Other property and investments	36,907	40,806
Total other property and investments	38,023	41,922
Current Assets
Cash and cash equivalents	5,997	4,963
Accounts receivable — customers, less allowance for doubtful accounts	26,206	34,416
Unbilled revenue — receivable (Note 2)	20,663	27,147
Receivable from U.S. government, less allowance for doubtful accounts (Note 2)	34,974	27,827
Other accounts receivable, less allowance for doubtful accounts	4,215	6,510
Income taxes receivable	3,901	236
Materials and supplies	14,623	12,163
Regulatory assets — current	14,028	8,897
Prepayments and other current assets	5,450	5,317
Contract assets (Note 2)	9,390	6,135
Purchase power contract derivatives at fair value	11,847	4,441
Total current assets	151,294	138,052
Regulatory and Other Assets
Unbilled revenue, receivable from U.S government	6,456	9,671
Receivable from U.S. government (Note 2)	50,482	51,991
Contract assets (Note 2)	5,592	3,452
Operating lease right-of-use assets	9,535	10,479
Regulatory assets	5,694	3,182
Other	13,532	16,230
Total other assets	91,291	95,005
Total Assets	2,034,374	1,900,983
Capitalization
Common shareholder’s equity	709,549	685,947
Long-term debt	446,547	412,176
Total capitalization	1,156,096	1,098,123
Current Liabilities
Notes payable to banks	255,500	31,000
Long-term debt — current	399	377
Accounts payable	84,849	65,902
Income taxes payable	1,848	4,662
Accrued other taxes	16,257	17,137
Accrued employee expenses	13,996	16,256
Accrued interest	5,308	4,545
Regulatory liabilities	4,574	1,896
Contract liabilities (Note 2)	903	257
Operating lease liabilities	1,892	2,044
Other	10,996	11,498
Total current liabilities	396,522	155,574
Other Credits
Notes payable to banks	22,000	174,500
Advances for construction	64,351	66,727
Contributions in aid of construction — net	147,918	147,482
Deferred income taxes	149,677	140,290
Regulatory liabilities	40,602	32,979
Unamortized investment tax credits	1,082	1,153
Accrued pension and other post-retirement benefits	33,636	61,365
Operating lease liabilities	8,090	8,920
Other	14,400	13,870
Total other credits	481,756	647,286
Commitments and Contingencies
Liabilities and Equity, Total	$ 2,034,374	$ 1,900,983