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Income Taxes (Tables) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Provision for Income Taxes | The provision for income taxes consists of the following:
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Current: |  |  |  |  |  |
Federal |  | $ | 151,532 |  |  | $ | 115,610 |  |  | $ | 126,358 |
State |  | 42,769 |  |  | 34,586 |  |  | 37,038 |
Deferred: |  |  |  |  |  |
Federal |  | (13,289) |  |  | (2,195) |  |  | 138 |
State |  | (4,227) |  |  | (745) |  |  | (999) |
Income tax expense |  | $ | 176,785 |  |  | $ | 147,256 |  |  | $ | 162,535 |
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense | $ 0 | $ 0 | $ (497)
Deferred Income Taxes on Consolidated Balance Sheets | Deferred income taxes on our consolidated balance sheets were comprised of the following:
|  | December 31,
|  | 2020 |  | 2019
Deferred tax assets: |  |  |  |
Other accrued expenses and contract land deposit reserve |  | $ | 67,520 |  |  | $ | 52,726 |
Deferred compensation |  | 4,608 |  |  | 4,635 |
Equity-based compensation expense |  | 41,839 |  |  | 42,043 |
Inventory |  | 13,118 |  |  | 10,530 |
Unrecognized tax benefit |  | 11,705 |  |  | 12,355 |
Other |  | 8,639 |  |  | 8,289 |
Total deferred tax assets |  | 147,429 |  |  | 130,578 |
Less: Deferred tax liabilities |  | 7,184 |  |  | 7,902 |
Net deferred tax asset |  | $ | 140,245 |  |  | $ | 122,676 |
Income Tax Expense Reconciliation | A reconciliation of income taxes computed at the federal statutory rate (21%) to income tax expense is as follows:
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Income taxes computed at the federal statutory rate |  | $ | 226,387 |  |  | $ | 215,417 |  |  | $ | 201,544 |
State income taxes, net of federal income tax benefit (1) |  | 47,469 |  |  | 45,770 |  |  | 42,944 |
Excess tax benefits from equity-based compensation |  | (92,234) |  |  | (101,466) |  |  | (77,478) |
Remeasurement of net deferred tax assets due to enactment of Tax Cut and Jobs Act |  | — |  |  | — |  |  | (497) |
Other, net (2) |  | (4,837) |  |  | (12,465) |  |  | (3,978) |
Income tax expense |  | $ | 176,785 |  |  | $ | 147,256 |  |  | $ | 162,535 |
(1)Excludes state excess tax benefits from equity-based compensation included in the line below. (2) Primarily attributable to tax benefits from certain energy credits for the years ended December 31, 2020 and 2019. |  |
Reconciliation of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
|  | Year Ended December 31,
|  | 2020 |  | 2019
Balance at beginning of year |  | $ | 39,356 |  |  | $ | 43,418 |
Additions based on tax positions related to the current year |  | 3,155 |  |  | 2,941 |
Reductions for tax positions of prior years |  | (5,694) |  |  | (7,003) |
Settlements |  | — |  |  | — |
Balance at end of year |  | $ | 36,817 |  |  | $ | 39,356 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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