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Income Taxes | 12 Months Ended
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Dec. 31, 2019
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes The Company files a consolidated U.S. federal income tax return and various state income tax returns. The provision for the federal and state income taxes attributable to income (loss) consists of the following components:
| Years Ended December 31,
(in thousands) | 2019 |  | 2018 |  | 2017
Current (benefit) expense |  |  |  |  |
Federal taxes | $ | (1,205 | ) |  | $ | 2,875 |  |  | $ | 1,552 |
State taxes | 5,665 |  |  | 6,434 |  |  | (630 | )
Total current provision | 4,460 |  |  | 9,309 |  |  | 922 |
Deferred expense (benefit) |  |  |  |  |
Federal taxes | 12,183 |  |  | 6,708 |  |  | (52,886 | )
State taxes | (539 | ) |  | (500 | ) |  | (1,169 | )
Total deferred provision | 11,644 |  |  | 6,208 |  |  | (54,055 | )
Income tax expense (benefit) | $ | 16,104 |  |  | $ | 15,517 |  |  | $ | (53,133 | )
Effective tax rate | 22.7 | % |  | 25.0 | % |  |
A reconciliation of income taxes determined by applying the federal and state tax rates to income (loss) is as follows:
| Years Ended December 31,
(in thousands) | 2019 |  | 2018 |  | 2017
Expected tax expense at federal statutory | $ | 14,918 |  |  | $ | 13,044 |  |  | $ | 4,640 |
State income taxes, net of federal tax effect | 4,709 |  |  | 4,748 |  |  | (1,129 | )
Revaluation of U.S. deferred income taxes | — |  |  | (760 | ) |  | (53,449 | )
Excess tax benefit from share based compensation and other, net | (3,523 | ) |  | (1,515 | ) |  | (3,195 | )
Income tax expense (benefit) | $ | 16,104 |  |  | $ | 15,517 |  |  | $ | (53,133 | )
The effective tax rate in 2019 decreased slightly from 2018, primarily as a result of the larger discrete excess tax benefit from share based compensation and other, net. Deferred taxes were revalued in 2017 to reflect the change from a 35% federal statutory rate to 21% as a result of the 2017 Tax Cut and Jobs Act. As a result, the effective tax rate in 2017 is not meaningful. The Company's cash payments for income taxes were $9.5 million in the year ended December 31, 2019. The Company received cash refunds for income taxes of $2.7 million in the year ended December 31, 2018. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply in the year of reversal or settlement and arise from temporary differences between the US GAAP and tax bases of the following assets and liabilities:
(in thousands) | December 31, 2019 |  | December 31, 2018
Deferred tax assets: |  |  |
Leases | $ | 106,564 |  |  | $ | — |
Asset retirement obligations | 9,957 |  |  | 7,797 |
Net operating loss carry-forwards | 10,071 |  |  | 12,612 |
Pension liabilities | 3,161 |  |  | 2,873 |
Accruals and stock based compensation | 1,935 |  |  | 6,545 |
Other | 1,408 |  |  | — |
Total gross deferred tax assets | 133,096 |  |  | 29,827 |
Less valuation allowance | — |  |  | (862 | )
Net deferred tax assets | 133,096 |  |  | 28,965 |
Deferred tax liabilities: |  |  |
Property, plant and equipment | 110,297 |  |  | 99,902 |
Leases | 105,475 |  |  | — |
Intangible assets | 27,201 |  |  | 32,727 |
Prepaid assets and other | 26,574 |  |  | 23,789 |
Total gross deferred tax liabilities | 269,547 |  |  | 156,418 |
Net deferred tax liabilities | $ | 136,451 |  |  | $ | 127,453 |
In assessing the ability to realize deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon generating future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, taxable income in prior carryback years if available and tax planning strategies in making this assessment. Based upon the level of historical taxable income and projections for future taxable income over the periods for which the deferred tax assets are deductible, the Company believes it more likely than not that the net deferred tax assets will be realized. The Company has a deferred tax asset of $10.1 million related to federal and various state net operating losses. As of December 31, 2019, the Company had approximately $46.2 million of federal net operating losses expiring through 2027. The Company also had approximately $19.0 million of state net operating losses expiring through 2036. As of December 31, 2019 and 2018, the Company had no unrecognized tax benefits. The Company is not currently subject to state or federal income tax audits as of December 31, 2019. The Company's returns are generally open to examination from 2016 forward and the net operating losses acquired from nTelos are open to examination from 2002 forward.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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