Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

For the years ended December 31, 2014, 2013 and 2012, income before income taxes is broken out between U.S. and foreign-sourced operations and consisted of the following (in thousands):

	2014		2013		2012
Domestic	$	16,961	$	5,435	$	15,958
Foreign	14,611		14,404		11,660
Total	$	31,572	$	19,839	$	27,618

Schedule of Components of Income Tax Expense (Benefit)

The components of the provision for income taxes for the years ended December 31, 2014, 2013 and 2012, consisted of the following (in thousands):

	2014			2013			2012
Current expense (benefit):
Federal	$	1,316		$	(747	)	$	5,350
State	768			333			1,014
Foreign	2,644			2,324			995
Total current expense	4,728			1,910			7,359
Deferred expense (benefit):
Federal	4,078			1,089			871
State	(119		)	278			(343		)
Foreign	(89		)	(8		)	21
Total deferred expense	3,870			1,359			549
Total income tax expense	$	8,598		$	3,269		$	7,908

Schedule of Effective Income Tax Rate Reconciliation

The difference between the income tax expense reported and amounts computed by applying the statutory federal rate of 35.0% to pretax income for the years ended December 31, 2014, 2013 and 2012, consisted of the following (in thousands):

	2014			2013			2012
Computed federal income tax expense at statutory rate of 35%	$	11,050		$	6,943		$	9,667
State income taxes	438			397			436
Tax credits	(888		)	(1,385		)	(779		)
Production activity deduction	—			—			(388		)
Foreign tax rate differential	(1,958		)	(2,374		)	(1,419		)
Uncertain tax positions	(76		)	(520		)	(42		)
Deferred compensation insurance assets	(81		)	(358		)	(155		)
Other — including the effect of graduated rates	113			566			588
Total income tax expense	$	8,598		$	3,269		$	7,908

Schedule of Deferred Tax Assets and Liabilities

Deferred income tax assets and liabilities at December 31, 2014 and 2013, consisted of the following temporary differences and carry-forward items (in thousands):

	2014			2013
Deferred income tax assets:
Allowance for uncollectible accounts receivable	$	366		$	342
Accrued compensation expense	5,492			5,001
Inventory differences	2,401			2,317
Net operating loss carryforwards	13,542			18,060
Deferred revenue	87			280
Stock-based compensation expense	2,479			2,704
Uncertain tax positions	284			559
Federal research and development credit carryforward	1,413			569
Foreign Tax Credits	1,374			—
Other	4,173			3,197
Total deferred income tax assets	31,611			33,029
Deferred income tax liabilities:
Prepaid expenses	(708		)	(751		)
Property and equipment	(23,298		)	(21,893		)
Intangible assets	(4,853		)	(3,837		)
Other	(1,150		)	(1,295		)
Total deferred income tax liabilities	(30,009		)	(27,776		)
Valuation allowance	(1,603		)	(1,363		)
Net deferred income tax assets (liabilities)	$	(1	)	$	3,890
Reported as:
Deferred income tax assets - Current	$	6,375		$	5,638
Deferred income tax assets - Long-term	9			800
Deferred income tax liabilities - Current	—			—
Deferred income tax liabilities - Long-term	(6,385		)	(2,548		)
Net deferred income tax assets (liabilities)	$	(1	)	$	3,890

Summary of Income Tax Contingencies

A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax benefits for the years ended December 31, 2014, 2013 and 2012, consisted of the following (in thousands):

Tabular Roll-forward	2014			2013			2012
Unrecognized tax benefits, opening balance	$	2,129		$	2,776		$	3,113
Gross increases in tax positions taken in a prior year	142			107			83
Gross increases in tax positions taken in the current year	309			236			260
Lapse of applicable statute of limitations	(844		)	(990		)	(680		)
Unrecognized tax benefits, ending balance	$	1,736		$	2,129		$	2,776