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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) from continuing operations is composed of the following: 

	Year Ended December 31,
	2016				2015				2014
Current:
Federal	$	12,637			$	8,954			$	—
State	342				1,003				229
	12,979				9,957				229
Deferred:
Federal	(254		)		3,174				5,010
State	808				(904		)		(2,974		)
	554				2,270				2,036
Total	$	13,533			$	12,227			$	2,265

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation of income tax expense from operations at the normal statutory federal rate to the provision included in the accompanying Consolidated Statements of Income is shown below:

	Year Ended December 31,
	2016				2015				2014
"Expected" provision at federal statutory rate	$	15,651			$	13,446			$	9,116
State income taxes, net	1,672				1,714				709
Change in valuation allowance	(718		)		(2,385		)		(7,618		)
Domestic production activity deduction	(1,247		)		(1,002		)		—
Share-based compensation(a)	(1,408		)		N/A				N/A
Federal and state tax credits	(1,065		)		—				—
Other	648				454				58
Income tax expense	$	13,533			$	12,227			$	2,265
Effective tax rate	30.3		%		31.8		%		8.7		%

^(a)  The Company elected to early adopt ASU No. 2016-09, Compensation—Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting, in the quarter ended September 30, 2016 and, due to a required change in accounting principle, beginning that quarter, all excess tax benefits and deficiencies related to employee stock compensation are recognized within income tax expense in the Consolidated Statements of Income. The Company received a federal tax benefit of $1,408 and a state benefit of $163 for excess tax benefits in 2016 (see Note 9 for additional detail related to the ASU No. 2016-09 adoption).

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences giving rise to deferred income taxes shown on the Consolidated Balance Sheets are as follows:

	December 31,
	2016				2015
Deferred income tax assets:
Post-retirement liability	$	1,621			$	1,848
Deferred income	1,176				1,343
Share-based compensation	1,313				2,247
Capital loss carryforwards	716				1,444
State tax credit carryforwards	3,204				2,653
State operating loss carryforwards	1,151				2,216
Inventories	2,560				1,684
Other	1,381				2,224
Gross deferred income tax assets	$	13,122			$	15,659
Less: valuation allowance	(726		)		(1,444		)
Net deferred income tax assets	12,396				14,215
Deferred income tax liabilities:
Fixed assets	(14,313		)		(16,050		)
Equity method investments	(969		)		—
Other	(546		)		(922		)
Gross deferred income tax liabilities	(15,828		)		(16,972		)
Net deferred income tax liability	$	(3,432	)		$	(2,757	)

Summary of Valuation Allowance

A schedule of the change in valuation allowance is as follows:

		Valuation allowance
Balance at December 31, 2014		$	3,829
Reductions		2,385
Balance at December 31, 2015		$	1,444
Reductions		718
Balance at December 31, 2016		$	726

Schedule of Unrecognized Tax Benefits Roll Forward

The following is a reconciliation of the total amount of unrecognized tax benefits (excluding interest and penalties) for 2016, 2015, and 2014:

	Years Ended December 31,
	2016				2015				2014
Beginning of year balance	$	613			$	613			$	566
Additions for tax positions of prior years	2				—				8
Additions for tax positions of the current year	21				—				39
Reduction for prior year tax positions	(48		)		—				—
Reductions for settlements	(545		)
End of year balance	$	43			$	613			$	613

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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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Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

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