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Regulatory Matters	3 Months Ended
Regulatory Matters	Mar. 31, 2025
Regulated Operations [Abstract]
Regulatory Matters	Regulatory Matters Recent ACC Rulings and Activity 2024 GW-Farmers Rate Case On June 27, 2024, GW-Farmers filed a rate case application with the ACC for increased water rates based on a 2023 test year, with updates for changes in post-test year plant through December 31, 2024. On January 10, 2025, GW-Farmers filed with the ACC a unanimous settlement agreement between GW-Farmers, RUCO and the Utilities Division Staff of the ACC, and on March 26, 2025, the ALJ issued a ROO, which recommended approval of the settlement agreement. On April 29, 2025, the ACC approved GW-Farmers’ rate case application in Decision No. 80695. Among other approvals, Decision No. 80695 approved an increase in GW-Farmers’ annual revenue requirement of $1.1 million and a return on equity of 9.6%, with increased rates to be phased-in over three periods, starting with 50% of the increase effective on May 1, 2025, and subsequent 25% portions of the increase effective November 1, 2025 and May 1, 2026. In addition to the rate increase, Decision No. 80695 also approved a deferral of the recovery of an acquisition premium of approximately $3 million related to the Company’s acquisition of GW-Farmers, which we recorded as of March 31, 2025. The Decision calls for the acquisition premium to be recovered in a future rate case, subject to the GW-Farmers utility being found viable by the ACC. Refer to Note 8 – “Goodwill” for additional information. 2025 GW-Santa Cruz and GW-Palo Verde Rate Case On March 5, 2025, GW-Santa Cruz and GW-Palo Verde each filed a general rate case application with the ACC for water and wastewater rates, respectively. The GW-Santa Cruz and GW-Palo Verde rate case is based on a test year ending December 31, 2024, with updates for changes in post-test year plant. A procedural schedule has been set, with testimony and a hearing expected to commence in the fourth quarter of 2025. Decision No. 79383 - Issued June 20, 2024 - GW-Saguaro Rate Case On June 20, 2024, the ACC issued Decision No. 79383, which related to each of the rate case applications filed by seven of the Company’s regulated water utilities for increased water rates based on a 2022 test year. Decision No. 79383 approved, among other things, a collective annual revenue increase of approximately $351,000. The approved rates will be phased-in over five periods with the first increase effective July 1, 2024. The subsequent four increases will be effective on January 1 of each subsequent year. The majority of the revenue increase was phased in on January 1, 2025.