Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Utility plant:
Land	$ 39,900	$ 39,004
Depreciable plant and equipment	3,420,850	3,381,908
Construction in progress	180,961	176,427
Intangible assets	36,290	36,276
Property, plant, and equipment, gross	3,678,001	3,633,615
Less accumulated depreciation and amortization	1,160,758	1,136,116
Public utilities, property, plant and equipment, net	2,517,243	2,497,499
Real estate investments and nonutility properties	57,673	57,632
Less accumulated depreciation and amortization	16,251	15,951
Real estate investment property, total	41,422	41,681
Cash and cash equivalents:
Cash	17,487	10,908
Restricted cash	602	1,211
Accounts receivable:
Customers, net of allowances for uncollectible accounts of $5,113 and $4,600 on March 31, 2022 and December 31, 2021, respectively	53,942	53,699
Income tax	2,267	2,308
Other	4,470	4,735
Accrued unbilled utility revenue	39,506	44,026
Prepaid expenses	11,270	9,667
Current regulatory assets, net	4,370	2,629
Other current assets	4,021	4,902
Total current assets	137,935	134,085
OTHER ASSETS:
Net regulatory assets, less current portion	147,566	151,992
Investments	15,866	15,784
Goodwill	640,311	640,471
Other	11,533	10,883
Total other assets	815,276	819,130
Total assets	3,511,876	3,492,395
Stockholders’ equity:
Common stock, $0.001 par value; authorized 70,000,000 shares; issued and outstanding shares 30,237,145 on March 31, 2022 and 30,181,348 on December 31, 2021	30	30
Additional paid-in capital	607,637	606,392
Retained earnings	421,095	428,260
Accumulated other comprehensive income	(344)	(163)
Total stockholders’ equity	1,028,418	1,034,519
Long-term debt, less current portion	1,491,556	1,492,935
Capitalization, long-term debt and equity	2,519,974	2,527,454
CURRENT LIABILITIES:
Line of credit	75,997	62,996
Current portion of long-term debt	38,919	39,106
Accrued groundwater extraction charges, purchased water and power	19,340	17,200
Accounts payable	28,367	30,391
Accrued interest	18,500	14,174
Accrued payroll	8,746	11,583
Other current liabilities	27,984	27,821
Total current liabilities	217,853	203,271
DEFERRED INCOME TAXES	203,186	200,451
ADVANCES FOR CONSTRUCTION	137,436	130,693
CONTRIBUTIONS IN AID OF CONSTRUCTION	317,494	316,479
POSTRETIREMENT BENEFIT PLANS	92,069	89,998
OTHER NONCURRENT LIABILITIES	23,864	24,049
COMMITMENTS AND CONTINGENCIES
Total capitalization and liabilities	$ 3,511,876	$ 3,492,395