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General (Policies) | 6 Months Ended
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Jun. 30, 2024
Accounting Policies [Abstract] |
Basis of Accounting | The unaudited interim financial information has been prepared in accordance with accounting principles generally accepted in the United States of America and in accordance with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission. The Notes to Consolidated Financial Statements in SJW Group’s 2023 Annual Report on Form 10-K should be read in conjunction with the accompanying unaudited condensed consolidated financial statements.
Revenue | Revenue Water sales are seasonal in nature and influenced by weather conditions. The timing of precipitation and climatic conditions can cause seasonal water consumption by customers to vary significantly. Due to the seasonal nature of the water business, the operating results for interim periods are not indicative of the operating results for a 12-month period. Revenue is generally higher in the warm, dry summer months when water usage and sales are greater, and lower in the winter months when cooler temperatures and increased precipitation curtail water usage resulting in lower sales.
Fair Value Measurement | Fair Value Measurement The following instruments are not measured at fair value on SJW Group’s condensed consolidated balance sheets as of June 30, 2024, but require disclosure of their fair values: cash and cash equivalents, accounts receivable and accounts payable. The estimated fair value of such instruments as of June 30, 2024 approximates their carrying value as reported on the condensed consolidated balance sheets. There have been no changes in valuation techniques during the three and six months ended June 30, 2024. 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.
Earnings per Share | Earnings per Share Basic earnings per share is calculated using income available to common stockholders, divided by the weighted average number of shares outstanding during the period. Diluted earnings per share is calculated using income available to common stockholders divided by the weighted average number of shares of common stock including both shares outstanding and shares potentially issuable in connection with restricted common stock awards under SJW Group’s long-term incentive plans, shares potentially issuable under the performance stock plans assumed through the business combination with CTWS, and shares potentially issuable under SJW Group’s employee stock purchase plans.
New Accounting Standards | New Accounting Standards The recently issued accounting standards that have not yet been adopted by the company as of June 30, 2024 are as follows:
Standard |  | Description |  | Date of Adoption |  | Application |  | Effect on the Condensed Consolidated Financial Statements
Accounting Standards Update (“ASU”) 2023-07 “Improvements to Reportable Segment Disclosures” |  | The ASU requires disclosure of significant segment expenses, extends certain annual disclosures to interim periods, and additional qualitative disclosures regarding the chief operating decision maker. |  | The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2024. Early adoption is permitted. |  | Retrospective |  | SJW Group is currently evaluating the requirements of ASU 2023-07.
ASU 2023-09 “Improvements to Income Tax Disclosures” |  | The ASU amends certain income tax disclosure requirements, including adding requirements to present the reconciliation of income tax expense computed at the statutory rate to actual income tax expense using both percentages and amounts and providing a disaggregation of income taxes paid. Further, certain disclosures are eliminated, including the current requirement to disclose information on changes in unrecognized tax benefits in the next 12 months. |  | The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2025. Early adoption is permitted. |  | Prospective, with retrospective application also permitted. |  | SJW Group is currently evaluating the requirements of ASU 2023-09.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 + Details
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- Definition Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities. + References No definition available. + Details
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