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v3.10.0.1

Taxes on Income (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Taxes on income |  |  |  |
Unrecognized Tax Benefits |  | $ 0 | $ 0 | $ 0
Deferred tax assets: |  |  |  |
Regulatory-liability-related |  | 33,419,000 | 34,567,000 |
Contributions and advances |  | 5,281,000 | 4,679,000 |
Deferred Tax Assets, Other |  | 2,988,000 | 1,934,000 |
Deferred tax assets |  | 41,688,000 | 41,180,000 |
Deferred tax liabilities: |  |  |  |
Fixed assets |  | (131,413,000) | (130,115,000) |
Regulatory-asset-related: depreciation and other |  | (18,146,000) | (16,851,000) |
Balancing and memorandum accounts (non-flow-through) |  | (6,325,000) | (9,905,000) |
Deferred tax liabilities |  | (155,884,000) | (156,871,000) |
Accumulated deferred income taxes - net |  | (114,196,000) | (115,691,000) |
Current |  |  |  |
Federal |  | 17,252,000 | 20,978,000 | 2,297,000
State |  | 6,538,000 | 5,844,000 | 4,798,000
Total current tax expense |  | 23,790,000 | 26,822,000 | 7,095,000
Deferred |  |  |  |
Federal |  | (4,334,000) | 11,543,000 | 26,715,000
State |  | (1,439,000) | 609,000 | 925,000
Total deferred tax (benefit) expense |  | (5,773,000) | 12,152,000 | 27,640,000
Reconciliations of the effective tax rates to the federal statutory rate |  |  |  |
Federal taxes on pretax income at statutory rate (21% in 2018; 35% in 2017 and 2016) |  | 17,196,000 | 37,919,000 | 33,067,000
Increase (decrease) in taxes resulting from: |  | 3,693,000 | 4,382,000 | 3,029,000
Change in tax rate |  | (14,000) | (82,000) | 0
Excess deferred tax amortization |  | (2,101,000) | 0 | 0
Flow-through on fixed assets |  | 429,000 | 845,000 | 994,000
Flow-through on pension costs |  | 373,000 | 412,000 | (247,000)
Flow-through on removal costs |  | (1,445,000) | (1,980,000) | (2,068,000)
Domestic production activities deduction |  | (26,000) | (1,421,000) | (78,000)
Investment tax credit |  | (69,000) | (93,000) | (83,000)
Other- net |  | (19,000) | (1,008,000) | 121,000
Total income tax expense operations |  | 18,017,000 | 38,974,000 | 34,735,000
Pretax income from operations |  | $ 81,888,000 | $ 108,341,000 | $ 94,478,000
Effective income tax rate (as a percent) |  | 22.00% | 36.00% | 36.80%
Proceeds from Income Tax Refunds | $ 2,200,000 |  |  | $ 2,100,000
GSWC |  |  |  |
Deferred tax assets: |  |  |  |
Regulatory-liability-related |  | $ 33,419,000 | $ 34,567,000 |
Contributions and advances |  | 5,666,000 | 5,022,000 |
Deferred Tax Assets, Other |  | 3,310,000 | 1,625,000 |
Deferred tax assets |  | 42,395,000 | 41,214,000 |
Deferred tax liabilities: |  |  |  |
Fixed assets |  | (135,617,000) | (134,437,000) |
Regulatory-asset-related: depreciation and other |  | (18,146,000) | (16,851,000) |
Balancing and memorandum accounts (non-flow-through) |  | (6,873,000) | (10,706,000) |
Deferred tax liabilities |  | (160,636,000) | (161,994,000) |
Accumulated deferred income taxes - net |  | (118,241,000) | (120,780,000) |
Current |  |  |  |
Federal |  | 14,488,000 | 15,044,000 | (3,115,000)
State |  | 5,932,000 | 5,045,000 | 3,625,000
Total current tax expense |  | 20,420,000 | 20,089,000 | 510,000
Deferred |  |  |  |
Federal |  | (5,531,000) | 11,770,000 | 25,864,000
State |  | (1,286,000) | 2,200,000 | 2,235,000
Total deferred tax (benefit) expense |  | (6,817,000) | 13,970,000 | 28,099,000
Reconciliations of the effective tax rates to the federal statutory rate |  |  |  |
Federal taxes on pretax income at statutory rate (21% in 2018; 35% in 2017 and 2016) |  | 12,939,000 | 30,736,000 | 26,452,000
Increase (decrease) in taxes resulting from: |  | 3,335,000 | 4,924,000 | 3,118,000
Change in tax rate |  | 0 | (1,063,000) | 0
Excess deferred tax amortization |  | (2,101,000) | 0 | 0
Flow-through on fixed assets |  | 429,000 | 845,000 | 994,000
Flow-through on pension costs |  | 373,000 | 412,000 | (247,000)
Flow-through on removal costs |  | (1,445,000) | (1,980,000) | (2,068,000)
Domestic production activities deduction |  | (25,000) | (1,148,000) | 0
Investment tax credit |  | (69,000) | (93,000) | (82,000)
Other- net |  | 167,000 | (700,000) | 442,000
Total income tax expense operations |  | 13,603,000 | 34,059,000 | 28,609,000
Pretax income from operations |  | $ 61,615,000 | $ 87,816,000 | $ 75,578,000
Effective income tax rate (as a percent) |  | 22.10% | 38.80% | 37.90%

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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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