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Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Pretax income (loss) from domestic and foreign sources [Abstract] |  |  |  |
Domestic | $ 945,562 | $ 284,147 |  | $ 105,341
Foreign | 3,289 | 2,164 |  | 2,890
Income before income taxes | 948,851 | 286,311 |  | 108,231
Deferred income tax provision (benefit) [Abstract] |  |  |  |
Federal | 201,725 | 66,401 |  | 13,700
State | 48,332 | 17,434 |  | 4,574
Foreign | 12 | 0 |  | 7
Total current | 250,069 | 83,835 |  | 18,281
Federal | (12,149) | 22,321 |  | 7,430
State | (2,484) | 4,529 |  | 925
Foreign | 929 | 647 |  | 670
Total deferred | (13,704) | 27,497 |  | 9,025
Income tax provision | 236,365 | 111,332 |  | 27,306
Income Tax Rate Reconciliation [Abstract] |  |  |  |
Income before income taxes | $ 948,851 | $ 286,311 |  | $ 108,231
Statutory U.S. income tax rate (as a percent) | 21.00% | 21.00% |  | 21.00%
Statutory tax provision | $ 199,259 | $ 60,125 |  | $ 22,728
State taxes | 35,705 | 12,267 |  | 4,390
Stranded tax effects of Plan Termination | 0 | 38,794 | [1] | 0
Unrecognized tax benefits | 2 | 87 |  | (178)
Tax credits | (620) | (712) |  | (725)
Foreign rate differential | 236 | 65 |  | 71
Share-based compensation | (563) | (411) |  | (532)
Nondeductible executive compensation | 1,664 | 808 |  | 852
Meals and entertainment | 336 | 340 |  | 738
Other | 346 | (31) |  | (38)
Income tax provision | $ 236,365 | $ 111,332 |  | $ 27,306
Effective income tax rate (as a percent) | 24.90% | 38.90% |  | 25.20%
Income taxes paid (refunds), net | $ 260,100 | $ 75,100 |  | $ (1,400)
Deferred tax assets [Abstract] |  |  |  |
Employee benefits | 28,534 | 29,258 |  |
Lease Liabilities | 24,956 | 25,057 |  |
Inventories | 4,100 | 3,711 |  |
Foreign net operating loss carryforward | 1,685 | 1,279 |  |
Other | 7,170 | 6,921 |  |
Deferred Tax Assets, Gross | 66,445 | 66,226 |  |
Net deferred tax assets | 2,948 |  |  |
Deferred tax liabilities [Abstract] |  |  |  |
Property and equipment | (32,040) | (45,652) |  |
Right-of-use assets | (22,950) | (23,256) |  |
Intangible assets and other | (6,850) | (6,823) |  |
Other | (1,657) | (1,298) |  |
Deferred tax liabilities | (63,497) | (77,029) |  |
Total deferred tax liabilities, net |  | (10,803) |  |
Reconciliation of unrecognized tax benefits, roll forward |  |  |  |
Balance as of January 1 | 1,780 | 1,685 |  | 1,850
Increases related to prior years' tax positions | 0 | 97 |  | 0
Increases related to current years' tax positions | 28 | 89 |  | 53
Decreases related to prior years' tax positions | (19) | 0 |  | 0
Lapse of statute of limitations | (7) | (91) |  | (218)
Balance as of December 31 | 1,782 | 1,780 |  | 1,685
Unrecognized tax benefits that would impact tax rate | 1,800 | $ 1,800 |  | $ 1,700
State and Local Jurisdiction [Member] |  |  |  |
Deferred tax liabilities [Abstract] |  |  |  |
State income tax credits, subject to expiration | 1,900 |  |  |
CANADA | Subsidiaries [Member] |  |  |  |
Deferred tax liabilities [Abstract] |  |  |  |
Foreign net operating loss carryforwards, subject to expiration | $ 11,100 |  |  |
[1] | In December 2020, we eliminated our qualified defined benefit pension plan (Plan Termination), as discussed in Note 11, Retirement and Benefit Plans. Prior to the Plan Termination, "Accumulated other comprehensive loss" on our Consolidated Balance Sheet included the stranded tax effects of our conversion from a limited liability company to a corporation in 2013 and the adoption of the Tax Cuts and Jobs Act (the "Tax Act") in 2017. Upon Plan Termination, these stranded tax effects of $38.8 million were required to be released into income tax expense under GAAP.

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