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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Taxes

Schedule of Components of Income Tax Expense (Benefit)

​

​	​	​	​	​	​	​	​	​	​
(amounts in thousands)		2022			2021			2020
Current:	​	​	​	​	​	​	​	​	​
Federal	​	$	28,536	​	$	20,771	​	$	29,121
State	​	​	7,896	​	​	6,374	​	​	9,984
Deferred:	​	​	​	​	​	​	​	​	​
Federal	​	​	3,191	​	​	8,074	​	​	4,090
State	​	​	(4,042)	​	​	4,239	​	​	1,567
Total	​	$	35,581	​	$	39,458	​	$	44,762

​

Schedule of Effective Income Tax Rate Reconciliation

​

​	​	​	​	​	​	​	​	​	​
(amounts in thousands)		2022			2021			2020
Income taxes at federal statutory rate	​	$	33,763	​	$	31,144	​	$	34,373
State income taxes, net of federal income tax benefit	​	​	4,700	​	​	6,207	​	​	7,261
Nondeductible employee-related expenses	​	​	2,235	​	​	2,530	​	​	2,223
State deferred rate change	​	​	(5,462)	​	​	—	​	​	-
Other	​	​	345	​	​	(423)	​	​	905
Provision for income taxes	​	$	35,581	​	$	39,458	​	$	44,762

​

Schedule of Deferred Tax Assets and Liabilities

​

​	​	​	​	​	​	​
(amounts in thousands)		2022			2021
Deferred tax assets:	​	​	​	​	​	​
Accounts receivable	​	$	1,195	​	$	951
Employment incentives	​	​	6,329	​	​	6,886
Self-insurance liability	​	​	8,717	​	​	9,324
Postretirement benefit obligations	​	​	5,963	​	​	7,412
Net operating loss and credit carryforwards	​	​	5,009	​	​	6,202
Unrecognized tax benefits	​	​	2,869	​	​	2,108
Other	​	​	1,101	​	​	1,830
Total deferred tax assets	​	​	31,183	​	​	34,713
Deferred tax liabilities:	​	​	​	​	​	​
Inventories	​	​	(13,398)	​	​	(16,038)
Unrealized gains on marketable securities	​	​	1,280	​	​	(2,177)
Prepaids	​	​	(5,570)	​	​	(6,365)
Depreciation	​	​	(124,720)	​	​	(125,220)
Total deferred tax liabilities	​	​	(142,408)	​	​	(149,800)
Net deferred tax liability	​	$	(111,225)	​	$	(115,087)

​

Schedule of Unrecognized Tax Benefits

​

​	​	​	​	​	​	​
(amounts in thousands)		2022			2021
Unrecognized tax benefits at beginning of year	​	$	10,036	​	$	8,337
Increases based on tax positions related to the current year	​	​	2,376	​	​	1,699
Additions for tax positions of prior year	​	​	1,249	​	​	—
Reductions for tax positions of prior years	​	​	—	​	​	—
Settlements	​	​	—	​	​	—
Expiration of the statute of limitations for assessment of taxes	​	​	—	​	​	—
Unrecognized tax benefits at end of year	​	$	13,661	​	$	10,036

​

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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.

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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.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of the change in unrecognized tax benefits.

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