Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Utility plant:
Land	$ 10,844	$ 10,418
Depreciable plant and equipment	1,275,335	1,254,586
Construction in progress	35,335	30,846
Intangible assets	19,148	18,341
Property, Plant and Equipment, Gross	1,340,662	1,314,191
Less accumulated depreciation and amortization	424,786	415,453
Public Utilities, Property, Plant and Equipment, Net	915,876	898,738
Real estate investments	73,783	78,477
Less accumulated depreciation and amortization	10,410	10,658
Total	63,373	67,819
CURRENT ASSETS:
Cash and cash equivalents	3,118	2,299
Accounts receivable:
Customers, net of allowances for uncollectible accounts	14,396	14,496
Income tax	1,075	1,661
Other	966	476
Accrued unbilled utility revenue	14,027	17,556
Long-lived assets held-for-sale	4,028	0
Materials and supplies	1,107	1,045
Prepaid expenses	2,035	2,119
Assets, Current	40,752	39,652
OTHER ASSETS:
Investment in California Water Service Group	9,220	8,885
Unamortized debt issuance, broker and reacquisition costs	5,056	5,176
Regulatory assets, net	83,220	83,543
Other	6,438	6,173
Assets, Noncurrent	103,934	103,777
Assets	1,123,935	1,109,986
Shareholders' equity:
Common stock, $0.521 par value; authorized 36,000,000 shares; issued and outstanding 20,202,858 shares on March 31, 2014 and 20,169,211 on December 31, 2013	10,523	10,505
Additional paid-in capital	63,887	63,017
Retained earnings	241,351	244,266
Accumulated other comprehensive income	3,585	3,387
Total shareholders' equity	319,346	321,175
Long-term debt, less current portion	334,876	334,997
Capitalization, Long-term Debt and Equity	654,222	656,172
CURRENT LIABILITIES:
Line of credit	37,000	22,400
Current portion of long-term debt	537	554
Accrued groundwater extraction charges and purchased water	6,463	7,116
Purchased power	672	665
Accounts payable	10,702	12,587
Accrued interest	5,543	5,369
Accrued property taxes and other non-income taxes	2,458	1,618
Accrued payroll	3,249	3,198
Other current liabilities	5,302	5,688
Liabilities, Current	71,926	59,195
DEFERRED INCOME TAXES	140,820	140,736
UNAMORTIZED INVESTMENT TAX CREDITS	1,360	1,375
ADVANCES FOR CONSTRUCTION	71,551	70,043
CONTRIBUTIONS IN AID OF CONSTRUCTION	132,399	132,260
DEFERRED REVENUE	1,244	1,213
POSTRETIREMENT BENEFIT PLANS	45,003	43,496
OTHER NONCURRENT LIABILITIES	5,410	5,496
COMMITMENTS AND CONTINGENCIES	0	0
Liabilities and Equity	$ 1,123,935	$ 1,109,986