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Regulatory Matters 5 (Details) - GSWC - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Regulatory matters: |  |
Total | $ 2,042 | $ 146,281
Pension Costs and Other Postretirement Benefit Costs |  |
Regulatory matters: |  |
Regulatory asset | 34,700 |
Total | 33,019 | 28,118
Pension Costs and Other Postretirement Benefit Costs | Two-way pension balancing account |  |
Regulatory matters: |  |
Regulatory asset | $ 1,700 |
Water Revenue Adjustment Mechanism Net of Modified Cost Balancing Account [Member] |  |
Regulatory matters: |  |
Commercial paper, term | 90 days |
Total | $ 29,556 | 47,340
Low income rate assistance balancing accounts |  |
Regulatory matters: |  |
Commercial paper, term | 90 days |
Discount percentage for qualified low-income water customers | 15.00% |
Discount percentage for qualified low-income electric customers | 20.00% |
Total | $ 5,972 | $ 8,272

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- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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