Regulatory Rate Filings	6 Months Ended
Jun. 30, 2017
Regulated Operations [Abstract]
Regulatory Rate Filings	Regulatory Rate Filings On January 6, 2017, San Jose Water Company filed Advice Letter No. 501 with the CPUC requesting authorization to implement a sales reconciliation mechanism to better conform to water forecasts authorized in the last general rate case to recorded consumption for the period of October 2015 through September 2016. The CPUC has ordered all Class A and B water utilities that have a five percent or greater divergence between authorized and actual sales during declared drought years to request a sales reconciliation mechanism to better conform to water forecasts authorized in the last general rate case to recorded consumption. On May 3, 2017, the CPUC rejected the filing citing the end of a drought and the improved California water supply conditions. On May 10, 2017, San Jose Water Company formally requested the CPUC’s review of the rejection. The request for review is still pending before the CPUC. As required by the CPUC, on April 3, 2017 San Jose Water Company filed an application with the CPUC requesting authority to increase its authorized Cost of Capital for the period from January 1, 2018 through December 31, 2020. If approved by the CPUC, San Jose Water Company’s annual revenues would increase by approximately $7,550 or about 2.1% in 2018. On May 2, 2017, San Jose Water Company filed Advice Letter No. 508 with the CPUC to reinstate surcharges to recover the remaining $996 balance from the 2014 Mandatory Conservation Revenue Adjustment Memorandum Account (“MCRAMA”) and to recover the remaining $2,233 balance from the 2015 WCMA. The under-collections will be recovered via surcharges of $0.08 per CCF and $0.1441 per CCF on the existing quantity rate for the 2014 MCRAMA and the 2015 WCMA, respectively. This request was approved on June 1, 2017. San Jose Water Company anticipates collection of the remaining amounts in less than 12 months. On May 26, 2017, San Jose Water Company filed Advice Letter No. 509 with the CPUC requesting authorization to increase revenues by $12,407, or approximately 3.46%. The increase is intended to offset the increases to purchased potable water, ground water production, and purchased recycled water charges that will be implemented by San Jose Water Company’s water wholesaler effective July 1, 2017. This request was approved on June 26, 2017. On June 6, 2017, San Jose Water Company filed Advice Letter No. 510 with the CPUC requesting authorization to issue a surcredit totaling $1,794 to refund service charge rate changes as a result of a change in billing practice effective January 1, 2017. The refund period covers prorated service charge rate changes that occurred from January 1, 2014, through December 31, 2016. The request is still pending before the CPUC.

Regulatory Rate Filings

On January 6, 2017, San Jose Water Company filed Advice Letter No. 501 with the CPUC requesting authorization to implement a sales reconciliation mechanism to better conform to water forecasts authorized in the last general rate case to recorded consumption for the period of October 2015 through September 2016. The CPUC has ordered all Class A and B water utilities that have a five percent or greater divergence between authorized and actual sales during declared drought years to request a sales reconciliation mechanism to better conform to water forecasts authorized in the last general rate case to recorded consumption. On May 3, 2017, the CPUC rejected the filing citing the end of a drought and the improved California water supply conditions. On May 10, 2017, San Jose Water Company formally requested the CPUC’s review of the rejection. The request for review is still pending before the CPUC.

As required by the CPUC, on April 3, 2017 San Jose Water Company filed an application with the CPUC requesting authority to increase its authorized Cost of Capital for the period from January 1, 2018 through December 31, 2020. If approved by the CPUC, San Jose Water Company’s annual revenues would increase by approximately $7,550 or about 2.1% in 2018.

On May 2, 2017, San Jose Water Company filed Advice Letter No. 508 with the CPUC to reinstate surcharges to recover the remaining $996 balance from the 2014 Mandatory Conservation Revenue Adjustment Memorandum Account (“MCRAMA”) and to recover the remaining $2,233 balance from the 2015 WCMA. The under-collections will be recovered via surcharges of $0.08 per CCF and $0.1441 per CCF on the existing quantity rate for the 2014 MCRAMA and the 2015 WCMA, respectively. This request was approved on June 1, 2017. San Jose Water Company anticipates collection of the remaining amounts in less than 12 months.

On May 26, 2017, San Jose Water Company filed Advice Letter No. 509 with the CPUC requesting authorization to increase revenues by $12,407, or approximately 3.46%. The increase is intended to offset the increases to purchased potable water, ground water production, and purchased recycled water charges that will be implemented by San Jose Water Company’s water wholesaler effective July 1, 2017. This request was approved on June 26, 2017.

On June 6, 2017, San Jose Water Company filed Advice Letter No. 510 with the CPUC requesting authorization to issue a surcredit totaling $1,794 to refund service charge rate changes as a result of a change in billing practice effective January 1, 2017. The refund period covers prorated service charge rate changes that occurred from January 1, 2014, through December 31, 2016. The request is still pending before the CPUC.