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Summary of Significant Accounting Policies (Policies) | 6 Months Ended
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Jun. 30, 2020
Accounting Policies [Abstract] |
Revenue | Revenue from contracts with customers The Company principally generates operating revenue from contracts with customers by providing regulated water and wastewater services at tariff-rates authorized by the Commissions in the states in which they operate and non-regulated water and wastewater services at rates authorized by contracts with government agencies. Revenue from contracts with customers reflects amounts billed for the volume of consumption at authorized per unit rates, for a service charge, and for other authorized charges. The Company satisfies its performance obligation to provide water and wastewater services over time as services are rendered. The Company applies the invoice practical expedient and recognizes revenue from contracts with customers in the amount for which the Company has a right to invoice. The Company has a right to invoice for the volume of consumption, for the service charge, and for other authorized charges. The measurement of sales to customers is generally based on the reading of their meters, which occurs on a systematic basis throughout the month. At the end of each month, the Company estimates consumption since the date of the last meter reading and a corresponding unbilled revenue is recognized. The estimate is based upon the number of unbilled days that month and the average daily customer billing rate from the previous month (which fluctuates based upon customer usage). Contract terms are generally short-term and at will by customers and, as a result, no separate financing component is recognized for the Company's collections from customers, which generally require payment within 30 days of billing. The Company applies judgment, based principally on historical payment experience, in estimating its customers’ ability to pay. Certain customers are not billed for volumetric consumption, but are instead billed a flat rate at the beginning of each monthly service period. The amount billed is initially deferred and subsequently recognized over the monthly service period, as the performance obligation is satisfied. The deferred revenue balance or contract liability, which is included in "accrued expenses and other liabilities" on the consolidated balance sheets, is inconsequential. In the following tables, revenue from contracts with customers is disaggregated by class of customers for the three and six months ended June 30, 2020 and 2019:
| Three Months Ended June 30 |  |
| 2020 |  | 2019
Residential | $ | 116,453 |  |  | $ | 107,349 |
Business | 28,531 |  |  | 31,706 |
Industrial | 6,622 |  |  | 7,524 |
Public authorities | 7,711 |  |  | 7,613 |
Other (a) | 13,180 |  |  | 13,275 |
Total revenue from contracts with customers | $ | 172,497 |  |  | $ | 167,467 |
| Six Months Ended June 30 |  |
| 2020 |  | 2019
Residential | $ | 208,998 |  |  | $ | 191,609 |
Business | 56,223 |  |  | 57,186 |
Industrial | 14,500 |  |  | 14,788 |
Public authorities | 13,608 |  |  | 12,084 |
Other (a) | 14,001 |  |  | 9,210 |
Total revenue from contracts with customers | $ | 307,330 |  |  | $ | 284,877 |
(a) Other includes the accrued unbilled revenue. Regulatory balancing account revenue The Company’s ability to recover revenue requirements authorized by the California Public Utilities Commission (CPUC) in its triennial GRC, is decoupled from the volume of the sales. Regulatory balancing account revenue is revenue related to rate mechanisms authorized in California by the CPUC, which allow the Company to recover the authorized revenue and are not considered contracts with customers. These mechanisms include the following: The WRAM allows the Company to recognize the adopted level of volumetric revenues. The variance between adopted volumetric revenues and actual billed volumetric revenues for metered accounts is recorded as regulatory balancing account revenue. Cost-recovery rates, such as the MCBA, Conservation Expense Balancing Account (CEBA), PCBA, and HCBA, generally provide for recovery of the adopted levels of expenses for purchased water, purchased power, pump taxes, water conservation program costs, pension, and health care. Variances between adopted and actual costs are recorded as regulatory balancing account revenue. The WRAM, MCBA, PCBA, and HCBA are being litigated in the pending 2018 GRC, which is further discussed in Note 9. As the mechanisms are being litigated, the Company did not record regulatory assets for the WRAM, MCBA, PCBA, and HCBA for the first six months of 2020. The Company determined that these mechanisms did not meet the regulatory asset recognition criteria under accounting standards for regulated utilities. As the CEBA is not being litigated in the pending 2018 GRC, the Company recorded a regulatory liability for the CEBA for the first six months of 2020. The Company determined that the CEBA met the regulatory liability recognition criteria under accounting standards for regulated utilities. Each district's WRAM and MCBA regulatory assets and liabilities are allowed to be netted against one another. The Company recognizes regulatory balancing account revenues that have been authorized for rate recovery, are objectively determinable and probable of recovery, and are expected to be collected within 24 months. To the extent that regulatory balancing account revenue is estimated to be collectible beyond 24 months, recognition is deferred. Non-regulated Revenue The following tables disaggregate the Company’s non-regulated revenue by source for the three and six months ended June 30, 2020 and 2019:
| Three Months Ended June 30 |  |
| 2020 |  | 2019
Operating and maintenance revenue | $ | 2,789 |  |  | $ | 3,273 |
Other non-regulated revenue | 834 |  |  | 1,267 |
Non-regulated revenue from contracts with customers | $ | 3,623 |  |  | $ | 4,540 |
Lease revenue | $ | 585 |  |  | $ | 590 |
Total non-regulated revenue | $ | 4,208 |  |  | $ | 5,130 |
| Six Months Ended June 30 |  |
| 2020 |  | 2019
Operating and maintenance revenue | $ | 5,288 |  |  | $ | 6,319 |
Other non-regulated revenue | 1,599 |  |  | 2,563 |
Non-regulated revenue from contracts with customers | $ | 6,887 |  |  | $ | 8,882 |
Lease revenue | $ | 1,148 |  |  | $ | 1,149 |
Total non-regulated revenue | $ | 8,035 |  |  | $ | 10,031 |
Operating and maintenance services are provided for non-regulated water and wastewater systems owned by private companies and municipalities. The Company negotiates formal agreements with the customers, under which they provide operating, maintenance and customer billing services related to the customers’ water system. The formal agreements outline the fee schedule for the services provided. The agreements typically call for a fee-per-service or a flat-rate amount per month. The Company satisfies its performance obligation of providing operating and maintenance services over time as services are rendered; as a result, the Company employs the invoice practical expedient and recognizes revenue in the amount that it has the right to invoice. Contract terms are generally short-term and, as a result, no separate financing component is recognized for its collections from customers, which generally require payment within 30 days of billing. Other non-regulated revenue primarily relates to services for the design and installation of water mains and other water infrastructure for customers outside the regulated service areas and insurance program administration. Lease revenue is not considered revenue from contracts with customers and is recognized following operating lease standards. The Company is the lessor in operating lease agreements with telecommunications companies under which cellular phone antennas are placed on the Company's property. Allowance for credit losses The Company measures expected credit losses for Customer Receivables, Other Receivables, and Unbilled Revenue on an aggregated level. These receivables are generally trade receivables due in one year or less or expected to be billed and collected in one year or less. The expected credit losses for Other Receivables is inconsequential. Although the Company has residential, business, industrial, public authorities, and other customers, the risk characteristics of each of these customer classes is similar as the Company has determined that the differences in the customer write-off behavior among its customer classes is inconsequential. The overall risks related to the Company’s receivables is low as water and wastewater services are seen as essential services. The estimate for the allowance for credit losses is based off of a historical loss ratio that is adjusted for current conditions and reasonable and supportable forecasts. For the first six months of 2020, the estimate includes adjustments made for the effects of the COVID-19 pandemic. As the states in which the Company operates have issued ‘shelter-in-place” and social distancing ordinances, the Company is expecting segments of its customer base to continue to experience employment layoffs and business closures that negatively impact their ability to pay utility bills. The Company has also ceased all shutoffs for nonpayment during the pandemic. The following table presents the activity in the allowance for credit losses for the period ended June 30, 2020:
| As of June 30, 2020 |  |
Allowance for credit losses | Customer Receivables |  | Unbilled Revenue
Beginning balance | 374 |  |  | 397 |
Provision for credit loss expense | 875 |  |  | 727 |
Write-offs | (509) |  |  | (511) |
Recoveries | 135 |  |  | 112 |
Total ending allowance balance | $ | 875 |  |  | $ | 725 |
Adoption of New Accounting Standards and New Accounting Standards Issued But Not Yet Adopted | Adoption of New Accounting Standards In June of 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changed the impairment model for certain financial assets that have a contractual right to receive cash, including trade and loan receivables. The new model required recognition based upon an estimation of expected credit losses rather than recognition of losses when it is probable that they have been incurred. ASU 2016-13 was effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted. The Company adopted the standard utilizing the modified retrospective method for its trade receivables and unbilled revenue on January 1, 2020. Based on the composition of the Company’s trade receivables and unbilled revenue, and expected future losses, the adoption of ASU 2016-13 did not have a material impact on its consolidated financial statements. In January of 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, which eliminated the second step of the goodwill impairment test that required a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance, a goodwill impairment loss will be measured at the amount by which a reporting unit’s carrying amount exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 was effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted for any impairment test performed on testing dates after January 1, 2017. The Company adopted the standard on January 1, 2020 and the adoption of the standard did not have a material impact on its consolidated financial statements. In August of 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure for Fair Value Measurement, which modified the disclosure requirements on fair value measurements. The modifications in this update eliminated, amended, and added disclosure requirements for fair value measurements. ASU 2018-13 was effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted. The Company adopted the standard in part prospectively and in part retrospectively, in accordance with the requirements of ASU 2018-13, on January 1, 2020. Since the Company does not have level 3 fair value measurements or transfers between level 1 and level 2 fair value measurements, the adoption of the standard did not have a material impact on its footnote disclosures.

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