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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Components of Provision for Income Taxes

The components of the provision for (benefit from) income taxes are as follows:

		Year Ended December 31,
		2013				2012				2011
		(in thousands)
Current:
Federal		$	5,737			$	5,428			$	2,639
State			566				130				695
Total current tax expense			6,303				5,558				3,334
Deferred:
Federal			(7,319	)			(296	)			5,380
State			(1,110	)			259				904
Total deferred tax expense			(8,429	)			(37	)			6,284
		$	(2,126	)		$	5,521			$	9,618

Schedule of Effective Income Tax Rate Reconciliation

The difference between the Company’s effective income tax rates and the statutory United States federal income tax rate of 35% is explained as follows:

		Year Ended December 31,
		2013				2012				2011
		(in thousands)
Provision (benefit) at statutory rate of 35%		$	(1,067	)		$	7,618			$	7,800
State provision, net of federal benefit			(393	)			519				922
Research and development credits			(916	)			(1,734	)			—
Domestic manufacturing deduction			(641	)			(762	)			(389	)
Sale of business			—				—				341
Change in valuation allowance			954				—				872
Uncertain tax positions			(311	)			(67	)			126
Nondeductible expenses			370				278				190
Other			(122	)			(331	)			(244	)
		$	(2,126	)		$	5,521			$	9,618
Effective tax (benefit) rate			(69.7	)%			25.4	%			43.2	%

Schedule of Current and Noncurrent Deferred Tax Assets and Liabilities

The tax effect of temporary differences that give rise to significant portions of deferred tax assets and liabilities is presented below:

		December 31,
		2013				2012
		(in thousands)
Current deferred tax assets:
Costs and estimated earnings in excess of billings on uncompleted contracts, net		$	2,384			$	1,323
Accrued employee benefits			951				1,612
Inventories			2,671				1,393
Trade receivable, net			319				650
Net operating loss carryforwards			500				364
Other			520				693
			7,345				6,035
Valuation allowance			(500	)			(146	)
			6,845				5,889
Current deferred tax liabilities:
Prepaid expenses			(637	)			(712	)
Current deferred tax assets, net			6,208				5,177
Noncurrent deferred tax assets:
Net operating loss carryforwards			211				549
Tax credit carryforwards			478				64
Accrued employee benefits			3,740				3,673
Other assets			5,520				4,527
Other			138				17
			10,087				8,830
Valuation allowance			(1,394	)			(794	)
			8,693				8,036
Noncurrent deferred tax liabilities:
Property and equipment			(19,343	)			(23,290	)
Intangible assets			(1,192	)			—
Noncurrent deferred tax liabilities, net			(11,842	)			(15,254	)
Net deferred tax liabilities		$	(5,634	)		$	(10,077	)

Schedule of Unrecognized Tax Benefits

A summary of the changes in the unrecognized tax benefits during the years ended December 31, 2013, 2012 and 2011 is presented below (in thousands):

		2013				2012				2011
Unrecognized tax benefits, beginning of year		$	5,245			$	309			$	125
Increases for positions taken in prior years			646				3,571				10
Decreases for positions taken in prior years			(696	)			(184	)			—
Increases for positions taken in the current year			1,012				1,549				174
Unrecognized tax benefits, end of year		$	6,207			$	5,245			$	309

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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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