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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The components of income tax expense were:
| 2016 |  | 2015 |  | 2014
Current: |  |  |  |  |
Federal | $ | 21,651 |  |  | 3,723 |  |  | 50 |
State | 7,088 |  |  | 3,924 |  |  | (1,146 | )
Deferred: |  |  |  |  |
Federal | 6,119 |  |  | 16,109 |  |  | 28,493 |
State | (1,316 | ) |  | (484 | ) |  | (2,426 | )
| $ | 33,542 |  |  | 23,272 |  |  | 24,971 |
Schedule of Effective Income Tax Rate Reconciliation | The following table reconciles income tax expense to the amount computed by applying the federal statutory rate to income before income taxes of $86,381, $61,154 and $76,777 in 2016, 2015 and 2014:
| 2016 |  | 2015 |  | 2014
“Expected” federal income tax | $ | 30,233 |  |  | 21,404 |  |  | 26,872 |
Increase (decrease) in taxes attributable to: |  |  |  |  |
State taxes, net of federal income tax benefit | 4,874 |  |  | 3,332 |  |  | 4,155 |
Dividend received deduction | (21 | ) |  | (43 | ) |  | (46 | )
Uncertain tax positions | 16 |  |  | 3 |  |  | — |
Sales & Use Enterprise Zone Credit | (117 | ) |  | — |  |  | (880 | )
Tangible Property Regulations | (1,184 | ) |  | (1,081 | ) |  | (5,127 | )
Other items, net | (259 | ) |  | (343 | ) |  | (3 | )
| $ | 33,542 |  |  | 23,272 |  |  | 24,971 |
Schedule of Deferred Tax Assets and Liabilities | The components of the net deferred tax liability as of December 31 was as follows:
| 2016 |  | 2015
Deferred tax assets: |  |  |
Advances and contributions | $ | 17,196 |  |  | 16,612 |
Unamortized investment tax credit | 644 |  |  | 676 |
Pensions and postretirement benefits | 3,927 |  |  | 4,094 |
California franchise tax | 2,331 |  |  | 1,322 |
Other | 4,802 |  |  | 3,410 |
Total deferred tax assets | $ | 28,900 |  |  | 26,114 |
Deferred tax liabilities: |  |  |
Utility plant | $ | 177,338 |  |  | 165,293 |
Pension and postretirement benefits | 44,737 |  |  | 44,482 |
Investment in stock | 1,280 |  |  | 2,193 |
Deferred gain and other-property related | 9,769 |  |  | 11,686 |
Debt reacquisition costs | 347 |  |  | 397 |
Other | 632 |  |  | 838 |
Total deferred tax liabilities | $ | 234,103 |  |  | 224,889 |
Net deferred tax liabilities | $ | 205,203 |  |  | 198,775 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
Balance at December 31, 2015 | $ | 755 |
Increase related to tax positions taken during a prior year, including interest | 397 |
Reductions related to tax positions taken in a prior year, including interest | (20 | )
Balance at December 31, 2016 | $ | 1,132 |
Summary of Income Tax Examinations | SJW Group files U.S. federal income tax returns and income tax returns in various states. The Company is no longer subject to tax examination for fiscal years prior to 2013 for federal purposes and 2010 for state purposes. The open tax years for the jurisdictions in which SJW Group files are as follows:
Jurisdiction | Years Open
Federal | 2013 - 2015
California | 2010 - 2015
Arizona | 2012 - 2015
Connecticut | 2013 - 2014
Tennessee | 2013 - 2015
Texas | 2012 - 2015

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 + Details
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