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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Consolidation Policy | The accompanying consolidated financial statements include the accounts of SJW Corp., its wholly owned subsidiaries, and two variable interest entities in which two SJW Corp. subsidiaries are the primary beneficiaries. All intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates Policy | The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Utility Plant Policy | The cost of additions, replacements and betterments to utility plant is capitalized. The amount of interest capitalized in 2013, 2012 and 2011 was $905, $913 and $699, respectively. Construction in progress was $30,846 and $24,298 at December 31, 2013 and 2012, respectively. The major components of depreciable plant and equipment as of December 31, 2013 and 2012 are as follows:
| 2013 |  | 2012
Equipment | $ | 226,557 |  |  | 214,670 |
Transmission and distribution | 967,031 |  |  | 892,957 |
Office buildings and other structures | 60,998 |  |  | 58,593 |
Total depreciable plant and equipment | $ | 1,254,586 |  |  | 1,166,220 |
Depreciation is computed using the straight-line method over the estimated service lives of the assets, ranging from 5 to 75 years. The estimated service lives of depreciable plant and equipment are as follows:
| Useful Lives
Equipment | 5 to 35 years
Transmission and distribution plant | 35 to 75 years
Office buildings and other structures | 7 to 50 years
For the years 2013, 2012 and 2011, depreciation expense as a percent of the beginning of the year balance of depreciable plant was approximately 3.4%, 3.5% and 3.5%, respectively. A portion of depreciation expense is allocated to administrative and general expense. For the years 2013, 2012 and 2011, the amounts allocated to administrative and general expense were $1,556, $1,531 and $1,516, respectively. Depreciation expense for utility plant for the years ended December 31, 2013, 2012 and 2011 was $32,616, $31,005 and $29,141, respectively. The cost of utility plant retired, including retirement costs (less salvage), is charged to accumulated depreciation and no gain or loss is recognized.
Utility Plant Intangible Assets Policy | All intangible assets are recorded at cost and are amortized using the straight-line method over the legal or estimated economic life of the asset, ranging from 5 to 70 years (see Note 6).
Real Estate Investments Policy | Real estate investments are recorded at cost and consist primarily of land and buildings. Net gains and losses from the sale of real estate investments are recorded as a component of other (expense) income in the Consolidated Statements of Comprehensive Income. Nonutility property in Water Utility Services is also classified in real estate investments and not separately disclosed on the balance sheet based on the immateriality of the amount. Nonutility property is property that is neither used nor useful in providing water utility services to customers and is excluded from the rate base for rate-setting purposes. San Jose Water Company recognizes gain/loss on disposition of nonutility property in accordance with CPUC Code Section 790, whereby the net proceeds are reinvested back into property that is useful in providing water utility services to customers. There is no depreciation associated with nonutility property as it is all land.
Impairment of Long-Lived Assets Policy | In accordance with the requirements of FASB ASC Topic 360—“Property, Plant and Equipment,” the long-lived assets of SJW Corp. are reviewed for impairment when changes in circumstances or events require adjustments to the carrying values of the assets. When such changes in circumstances or events occur, the Company assesses recoverability by determining whether the carrying value of such assets will be recovered through the undiscounted expected future cash flows. To the extent an impairment exists, the asset is written down to its estimated fair value with a corresponding charge to operations in the period in which the impairment is identified. Long-lived assets consist primarily of utility plant in service, real estate investments, intangible assets, and regulatory assets. In addition, the Company tests unamortized intangible assets, which primarily relate to water rights, at least annually or more frequently if events or changes in circumstances indicate that this asset may be impaired.
Financial Instruments Policy | The following instruments are not measured at fair value on the Company's consolidated balance sheets but require disclosure of fair values: cash and cash equivalents, accounts receivable and accounts payable. The estimated fair value of such instruments approximates their carrying value as reported on the consolidated balance sheets. The fair value of such financial instruments are determined using the income approach based on the present value of estimated future cash flows. The fair value of these instruments would be categorized as Level 2 in the fair value hierarchy, with the exception of cash and cash equivalents, which would be categorized as Level 1.
Investment in Caifornia Water Service Group Policy | SJW Corp.'s investment in California Water Service Group is accounted for under FASB ASC Topic 320—“Investments—Debt and Equity Securities,” as an available-for-sale marketable security. The investment is recorded on the Consolidated Balance Sheet at its quoted market price with the change in unrealized gain or loss reported, net of tax, as a component of other comprehensive income (loss) (see Note 13).
Regulatory Assets and Liabilities Policy | Generally accepted accounting principles for water utilities include the recognition of regulatory assets and liabilities as permitted by ASC Topic 980. In accordance with ASC Topic 980, Water Utility Services, to the extent applicable, records deferred costs and credits on the balance sheet as regulatory assets and liabilities when it is probable that these costs and credits will be recognized in the ratemaking process in a period different from when the costs and credits are incurred. Accounting for such costs and credits is based on management's judgment and prior historical ratemaking practices, and it occurs when management determines that it is probable that these costs and credits will be recognized in the future revenue of Water Utility Services through the ratemaking process. The regulatory assets and liabilities recorded by Water Utility Services, in particular, San Jose Water Company, primarily relate to the recognition of deferred income taxes for ratemaking versus tax accounting purposes, balancing and memorandum accounts, postretirement pension benefits, medical costs, accrued benefits for vacation and asset retirement obligations that have not been passed through in rates. The Company adjusts the related asset and liabilities for these items through its regulatory asset and liability accounts at year-end, except for certain postretirement benefit costs and balancing and memorandum accounts which are adjusted monthly. The Company expects to recover regulatory assets related to plant depreciation income tax temporary differences over the average lives of the plant assets of between 5 to 75 years. Rate-regulated enterprises are required to charge a regulatory asset to earnings if and when that asset no longer meets the criteria for being recorded as a regulatory asset. San Jose Water Company continually evaluates the recoverability of regulatory assets by assessing whether the amortization of the balance over the remaining life can be recovered through expected and undiscounted future cash flows. Regulatory liabilities reflect balancing and memorandum accounts, temporary differences provided at higher than the current tax rate for utility plant which will flow through to future ratepayers, and unamortized investment tax credits.
Regulatory Rate Filings Policy | On January 3, 2012, San Jose Water Company filed a general rate case application requesting rate increases of $47,400, or 21.51% in 2013, $13,000, or 4.87% in 2014 and $34,800, or 12.59% in 2015. This general rate case filing also includes: (1) recovery of the under-collected balance of $2,599 in the balancing account, (2) disbursement of the over-collected balance of $650 accrued in various memorandum accounts and (3) implementation of a full revenue decoupling Water Revenue Adjustment Mechanism (“WRAM”) and associated Modified Cost Balancing Account (“MCBA”). The WRAM de-couples San Jose Water Company's revenue requirement from ratepayer usage. Under the WRAM, San Jose Water Company would recover the full quantity revenue amounts authorized by the CPUC by using advice letter filings for any unbilled quantity revenue amounts or refunds for over-collection, regardless of customer usage volumes. A MCBA similarly provides for recovery/refund for changes in water supply mix from amounts authorized by the CPUC. A general rate case is scheduled to be a year-long proceeding before the CPUC that involves a discovery phase led by the CPUC's Division of Ratepayer Advocates and customer intervenors that are assigned party status, settlement meetings, as well as possible evidentiary hearings. Parties to the proceeding filed opening briefs on July 20, 2012 and reply briefs on August 7, 2012. On September 26, 2012, San Jose Water Company filed a motion for interim rate relief so that if a decision was not reached by the end of 2012, San Jose Water Company would be allowed to adopt interim rates, effective January 1, 2013, until a decision is adopted. To date, a decision has not been adopted and interim rates are currently in effect. Interim rates were set equal to fiscal year-end 2012 rates. Differences between interim rates and approved rates are tracked in a memorandum account and will be submitted for recovery or refund. A decision on this application is expected in the second quarter of 2014. On October 3, 2013, CLWSC filed a rate case with the TCEQ. The filing contained a requested rate increase of 23.1%, or $2,400. With the exception of customers served within the City of Bulverde, the new rates became effective on December 2, 2013. Prior to approval by the TCEQ, such rates are subject to adjustment and refund. The Company has recognized the increase in accordance with ASC Topic 980 which provides that a regulated entity is permitted to bill requested rate increases before the regulator has ruled on the request. If information becomes available that indicates it is probable that any of the 23.1% rate increase will need to be refunded and the amount of refund can be reasonably estimated, a loss contingency shall be accrued. CLWSC has determined at this time that it is not probable that any of the rate increase will need to be refunded. Customers have 150 days from filing to protest the application. Management does not anticipate that the final TCEQ decision will materially affect the Company's financial position, results of operations or cash flows.
Income Tax Policy | Income taxes are accounted for using the asset and liability method. Deferred tax assets and liabilities are recognized for the effect of temporary differences between financial and tax reporting. Deferred tax assets and liabilities are measured using current tax rates in effect. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the period that includes the enactment date.
Regulatory Income Taxes Policy | To the extent permitted by the CPUC, investment tax credits resulting from utility plant additions are deferred and amortized over the estimated useful lives of the related property.
Advances for Construction and Contributions in Aid of Construction Policy | In California, advances for construction received after 1981 are refunded ratably over 40 years. Contributions in aid of construction represent funds received from developers that are not refundable under applicable regulations. Depreciation applicable to utility plant constructed with these contributions is charged to contributions in aid of construction. Customer advances and contributions in aid of construction received subsequent to 1986 and prior to June 12, 1996 generally must be included in federal taxable income. Taxes paid relating to advances and contributions are recorded as deferred tax assets for financial reporting purposes and are amortized over 40 years for advances, and over the tax depreciable life of the related asset for contributions. Receipts subsequent to June 12, 1996 are generally exempt from federal taxable income, unless specifically prescribed under treasury regulations. Advances and contributions received subsequent to 1991 and prior to 1997 are included in California state taxable income.
Asset Retirement Obligations Policy | SJW Corp.'s asset retirement obligation is recorded as a liability included in other non-current liabilities. It reflects principally the retirement costs of wells and other anticipated clean-up costs, which by law, must be remediated upon retirement. Retirement costs have historically been recovered through rates at the time of retirement. As a result, the liability is offset by a regulatory asset.
Revenue Recognition Policy | SJW Corp. recognizes its regulated and nonregulated revenue when services have been rendered, in accordance with ASC Topic 605. Metered revenue of Water Utility Services includes billing to customers based on meter readings plus an estimate of water used between the customers' last meter reading and the end of the accounting period. Water Utility Services read the majority of its customers' meters on a bi-monthly basis and records its revenue based on its meter reading results. Unbilled revenue from the last meter reading date to the end of the accounting period is estimated based on the most recent usage patterns, production records and the effective tariff rates. Actual results could differ from those estimates, which may result in an adjustment to the operating revenue in the period which the revision to Water Utility Services' estimates is determined. San Jose Water Company also recognizes balancing and memorandum accounts in its revenue when it is probable that future recovery of previously incurred costs or future refunds that are to be credited to customers will occur through the ratemaking process. Revenues also include a surcharge collected from regulated customers that is paid to the CPUC. This surcharge is recorded both in operating revenues and administrative and general expenses. For the years ended December 31, 2013, 2012 and 2011, the surcharge was $3,741, $3,862 and $3,272, respectively. Revenue from San Jose Water Company's nonregulated utility operations, maintenance agreements or antenna leases are recognized when services have been rendered. Nonregulated operating revenue in 2013, 2012 and 2011 includes $5,882, $5,523 and $4,935, respectively, from the operation of the City of Cupertino municipal water system. Revenue from SJW Land Company properties is recognized ratably over the term of the leases.
Balancing and Memorandum Accounts Policy | For California, the CPUC has established a balancing account mechanism for the purpose of tracking the under-collection or over-collection associated with expense changes and the revenue authorized by the CPUC to offset those expense changes. The Company also maintains memorandum accounts to track revenue impacts due to catastrophic events, unforeseen water quality expenses related to new federal and state water quality standards, energy efficiency, cost of capital, any revenue requirement impact of the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010, and other approved activities or as directed by the CPUC. As of December 31, 2013, the total balance in San Jose Water Company's balancing and memorandum accounts, including interest, was a net under-collection of $8,167. Balancing and memorandum accounts are recognized in revenue by San Jose Water Company when it is probable that future recovery of previously incurred costs or future refunds that are to be credited to customers will occur through the ratemaking process. In assessing the probability criteria for balancing and memorandum accounts between general rate cases, the Company considers evidence that may exist prior to CPUC authorization that would satisfy ASC Topic 980, subtopic 340-25 recognition criteria. Such evidence may include regulatory rules and decisions, past practices, and other facts and circumstances that would indicate that recovery or refund is probable. When such evidence provides sufficient support for balance recognition, the balances are recorded in the Company's financial statements.
Share-based Payment Policy | SJW Corp. utilizes the Black-Scholes option-pricing model, which requires the use of subjective assumptions, to compute the fair value of options at the grant date, and the basis for the share-based compensation for financial reporting purposes. In addition, SJW Corp. estimates forfeitures for share-based awards that are not expected to vest. SJW Corp. utilizes the Monte Carlo valuation model, which requires the use of subjective assumptions, to compute the fair value of market performance-vesting restricted stock units. The compensation cost charged to income is recognized on a straight-line basis over the requisite service period, which is the vesting period.
Maintenance Expense Policy | Planned major maintenance projects are charged to expense as incurred.
Earnings Per Share Policy | Basic earnings per share is calculated using income available to common shareholders, divided by the weighted average number of shares outstanding during the year. The two-class method in computing basic earnings per share is not used because the number of participating securities as defined in FASB ASC Topic 260—“Earnings Per Share” is not significant. (The two-class method is an earnings allocation formula that determines earnings per share for each class of common stock and participating security.) Diluted earnings per share is calculated using income available to common shareholders divided by the weighted average number of shares of common stock including both shares outstanding and shares potentially issuable in connection with stock options, deferred restricted common stock awards under SJW Corp.'s Long-Term Incentive Plan and shares potentially issuable under the Employee Stock Purchase Plan.

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- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2144681 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2144749 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32840-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 740 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32809-109319 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32247-109318 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32280-109318 + Details
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- Definition Disclosure of accounting policy for income taxes, including investment tax credits, and the related regulatory treatment (for example, whether deferred income tax accounting - normalization - is allowed in rate making). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 740 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501382&loc=d3e54053-110423 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 740 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501382&loc=d3e54136-110423 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 740 -URI http://asc.fasb.org/subtopic&trid=2156927 + Details
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- Definition Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.B.Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18823-107790 + Details
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- Definition Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(f) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2228939 + Details
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- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 + Details
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- Definition Disclosure of accounting policies and anticipated effects of regulatory rulings and on rate-setting regarding revenues and expenses incurred and recovered, including billed and unbilled revenues, revenues collected subject to refund, taxes collected from customers and remitted to governmental authorities, and postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2156579 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 10 -Section 05 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6499228&loc=d3e40187-110364 + Details
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