Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Utility plant:
Land	$ 18,303	$ 18,296
Depreciable plant and equipment	1,870,156	1,833,051
Construction in progress	100,350	68,765
Intangible assets	15,799	15,799
Utility plant, gross	2,004,608	1,935,911
Less accumulated depreciation and amortization	635,005	607,090
Utility plant, net	1,369,603	1,328,821
Real estate investments	56,473	56,336
Less accumulated depreciation and amortization	12,925	12,327
Total	43,548	44,009
Cash and cash equivalents:
Cash	9,849	8,722
Money market fund	412,000	412,000
Accounts receivable:
Customers, net of allowances for uncollectible accounts	24,350	19,154
Income tax	1,397	1,888
Other	2,456	1,203
Accrued unbilled utility revenue	32,800	27,974
Current regulatory assets, net	15,904	26,910
Other current assets	5,163	4,871
Current assets	503,919	502,722
OTHER ASSETS:
Net regulatory assets, less current portion	81,746	76,715
Other	4,834	4,122
Other assets	86,580	80,837
Assets	2,003,650	1,956,389
Stockholders’ equity:
Common stock, $0.001 par value; authorized 36,000,000 shares; issued and outstanding shares 28,442,139 on June 30, 2019 and 28,404,316 on December 31, 2018	28	28
Additional paid-in capital	497,633	495,366
Retained earnings	396,334	393,918
Total stockholders’ equity	893,995	889,312
Long-term debt, less current portion	510,859	431,424
Capitalization, Long-term Debt and Equity	1,404,854	1,320,736
CURRENT LIABILITIES:
Line of credit	55,000	100,000
Accrued groundwater extraction charges, purchased water and power	17,625	13,694
Accounts payable	28,253	24,937
Accrued interest	7,972	7,132
Accrued property taxes and other non-income taxes	1,042	1,926
Accrued payroll	5,573	7,181
Other current liabilities	11,593	9,115
Current liabilities	127,058	163,985
DEFERRED INCOME TAXES	76,983	79,651
ADVANCES FOR CONSTRUCTION	83,454	80,610
CONTRIBUTIONS IN AID OF CONSTRUCTION	168,515	168,243
POSTRETIREMENT BENEFIT PLANS	72,432	70,490
REGULATORY LIABILITY	57,901	59,149
OTHER NONCURRENT LIABILITIES	12,453	13,525
COMMITMENTS AND CONTINGENCIES	0	0
Capitalization and liabilities	$ 2,003,650	$ 1,956,389