Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Utility plant:
Land	$ 10,156	$ 8,852
Depreciable plant and equipment	1,166,220	1,070,016
Construction in progress	24,298	18,527
Intangible assets	15,561	14,732
Property, Plant and Equipment, Gross	1,216,235	1,112,127
Less accumulated depreciation and amortization	384,675	355,914
Public Utilities, Property, Plant and Equipment, Net	831,560	756,213
Real estate investment	74,232	89,099
Less accumulated depreciation and amortization	9,045	10,557
Property, Plant and Equipment, Net	65,187	78,542
Current assets:
Cash and cash equivalents	2,522	26,734
Accounts receivable:
Customers, net of allowances for uncollectible accounts of $225 in 2012 and 2011	12,317	12,541
Income tax	489	5,248
Other	854	746
Accrued unbilled utility revenue	16,284	15,318
Long-lived assets held-for-sale	7,768	0
Materials and supplies	1,088	991
Prepaid expenses	1,589	1,598
Other current asset	0	5,739
Assets, Current	42,911	68,915
Other assets:
Investment in California Water Service Group	7,067	7,032
Unamortized debt issuance, broker and reacquisition costs	5,226	4,865
Regulatory assets, net	130,488	119,248
Other	5,060	3,995
Assets, Noncurrent	147,841	135,140
Assets	1,087,499	1,038,810
Shareholders’ equity:
Common stock, $0.521 par value; authorized 36,000,000 shares; issued and outstanding 18,670,566 shares in 2012 and 18,592,827 shares in 2011	9,724	9,684
Additional paid-in capital	26,117	24,552
Retained earnings	236,453	227,494
Accumulated other comprehensive income	2,310	2,274
Total shareholders’ equity	274,604	264,004
Long-term debt, less current portion	335,598	343,848
Capitalization, Long-term Debt and Equity	610,202	607,852
Current liabilities:
Line of credit	15,300	0
Current portion of long-term debt	5,392	838
Accrued groundwater extraction charges and purchased water	4,755	5,789
Purchased power	317	423
Accounts payable	8,481	7,417
Accrued interest	5,355	5,376
Accrued property taxes and other non-income taxes	1,465	1,298
Accrued payroll	3,069	2,744
Other current liabilities	4,973	4,403
Liabilities, Current	49,107	28,288
Deferred income taxes	147,579	133,541
Unamortized investment tax credits	1,434	1,495
Advances for construction	68,277	67,333
Contributions in aid of construction	128,466	123,335
Deferred revenue	1,137	1,070
Postretirement benefit plans	73,425	68,855
Other noncurrent liabilities	7,872	7,041
Commitments and contingencies	0	0
Liabilities and Equity	$ 1,087,499	$ 1,038,810