Regulatory Rate Filings	6 Months Ended
Jun. 30, 2016
Regulated Operations [Abstract]
Regulatory Rate Filings	Regulatory Rate Filings On January 5, 2015, San Jose Water Company filed General Rate Case Application No. 15-01-002 requesting authority for an increase of revenue of $34,928, or 12.22%, in 2016, $9,954, or 3.11%, in 2017 and $17,567, or 5.36%, in 2018. On June 9, 2016 the CPUC issued Decision 16-06-004 approving two partial settlements, resolving disputed issues and adopting revenue requirements for San Jose Water Company. The decision authorizes an increase of 8.60% in authorized revenue requirement effective January 1, 2016. Updated rates were implemented on June 14, 2016. Rates and revenue for 2017 and 2018 will be determined based on the forecasted change in the consumer price index from the preceding year. The decision also approved the requested recovery of the net under-collected balance of $3,776 accumulated in various balancing and memorandum accounts. This balance was previously recorded by the Company as revenue through the balancing and memorandum accounts in prior periods in accordance with San Jose Water Company's revenue recognition policy. Since a decision was not reached by the end of 2015, the CPUC authorized San Jose Water Company to implement a surcharge to true-up the difference between interim rates for the period January 1, 2016 to the implementation date of updated rates on June 14, 2016. On June 28, 2016, San Jose Water Company filed Advice Letter 492 seeking recovery of $8,767 which was not collected over the period January 1, 2016 through June 13, 2016 due to the delayed decision. Subsequently, under the CPUC staff's direction, this filing was amended to include previously uncollected revenue from the prior general rate case in the amount of $524, for a total recovery of $9,291. San Jose Water Company's request was approved and a surcharge of $0.1832 per CCF was implemented effective July 9, 2016 to recover this balance. On July 30, 2015, San Jose Water Company filed Application No. 15-07-027 with the CPUC seeking the authorization to implement a reincorporation of San Jose Water Company's parent holding company, SJW Corp., from its present form as a California corporation to a Delaware corporation. On May 26, 2016, the CPUC issued Decision 16-05-037 authorizing the reincorporation. On June 10, 2016, San Jose Water Company filed Advice Letter No. 490 with the CPUC requesting authorization to increase revenues by $21,439, or approximately 6.72%. This increase is intended to recover increased costs for purchased water and ground water production charged by the SCVWD. As directed by the CPUC's Water Division, the revenue increase will be recovered via surcharges on the existing quantity rate. The request was authorized and effective on July 1, 2016. San Jose Water Company filed Advice Letters 491 and 493 on June 24, 2016 and June 30, 2016, respectively, with the CPUC to revise the existing Tariff Rule 14.1 which is a water shortage contingency plan with mandatory water usage reductions and drought surcharges. The applicable tariffs were revised to reflect the locally-developed conservation standard of a 20% reduction from 2013 usage levels. With these advice letters San Jose Water Company proposed to ease the existing drought allocations and existing drought rules. San Jose Water Company's requested changes were approved by the CPUC with an effective date of July 1, 2016. Effective September 1, 2014, CLWSC became subject to the economic regulation of the PUCT. Prior to that time, CLWSC was subject to economic regulation by the Texas Commission on Environmental Quality (“TCEQ”). Both the PUCT and TCEQ authorize rate increases after the filing of an Application for a Rate/Tariff Change. Rate cases may be filed as they become necessary, provided there is no current rate case outstanding. Further, rate cases may not be filed more frequently than once every 12 months.

Regulatory Rate Filings

On January 5, 2015, San Jose Water Company filed General Rate Case Application No. 15-01-002 requesting authority for an increase of revenue of $34,928, or 12.22%, in 2016, $9,954, or 3.11%, in 2017 and $17,567, or 5.36%, in 2018. On June 9, 2016 the CPUC issued Decision 16-06-004 approving two partial settlements, resolving disputed issues and adopting revenue requirements for San Jose Water Company. The decision authorizes an increase of 8.60% in authorized revenue requirement effective January 1, 2016. Updated rates were implemented on June 14, 2016. Rates and revenue for 2017 and 2018 will be determined based on the forecasted change in the consumer price index from the preceding year. The decision also approved the requested recovery of the net under-collected balance of $3,776 accumulated in various balancing and memorandum accounts. This balance was previously recorded by the Company as revenue through the balancing and memorandum accounts in prior periods in accordance with San Jose Water Company's revenue recognition policy. Since a decision was not reached by the end of 2015, the CPUC authorized San Jose Water Company to implement a surcharge to true-up the difference between interim rates for the period January 1, 2016 to the implementation date of updated rates on June 14, 2016. On June 28, 2016, San Jose Water Company filed Advice Letter 492 seeking recovery of $8,767 which was not collected over the period January 1, 2016 through June 13, 2016 due to the delayed decision. Subsequently, under the CPUC staff's direction, this filing was amended to include previously uncollected revenue from the prior general rate case in the amount of $524, for a total recovery of $9,291. San Jose Water Company's request was approved and a surcharge of $0.1832 per CCF was implemented effective July 9, 2016 to recover this balance.

On July 30, 2015, San Jose Water Company filed Application No. 15-07-027 with the CPUC seeking the authorization to implement a reincorporation of San Jose Water Company's parent holding company, SJW Corp., from its present form as a California corporation to a Delaware corporation. On May 26, 2016, the CPUC issued Decision 16-05-037 authorizing the reincorporation.

On June 10, 2016, San Jose Water Company filed Advice Letter No. 490 with the CPUC requesting authorization to increase revenues by $21,439, or approximately 6.72%. This increase is intended to recover increased costs for purchased water and ground water production charged by the SCVWD. As directed by the CPUC's Water Division, the revenue increase will be recovered via surcharges on the existing quantity rate. The request was authorized and effective on July 1, 2016.

San Jose Water Company filed Advice Letters 491 and 493 on June 24, 2016 and June 30, 2016, respectively, with the CPUC to revise the existing Tariff Rule 14.1 which is a water shortage contingency plan with mandatory water usage reductions and drought surcharges. The applicable tariffs were revised to reflect the locally-developed conservation standard of a 20% reduction from 2013 usage levels. With these advice letters San Jose Water Company proposed to ease the existing drought allocations and existing drought rules. San Jose Water Company's requested changes were approved by the CPUC with an effective date of July 1, 2016.

Effective September 1, 2014, CLWSC became subject to the economic regulation of the PUCT. Prior to that time, CLWSC was subject to economic regulation by the Texas Commission on Environmental Quality (“TCEQ”). Both the PUCT and TCEQ authorize rate increases after the filing of an Application for a Rate/Tariff Change. Rate cases may be filed as they become necessary, provided there is no current rate case outstanding. Further, rate cases may not be filed more frequently than once every 12 months.