Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Income before Income Tax, Domestic and Foreign

For the years ended December 31, 2015, 2014 and 2013, income before income taxes is broken out between U.S. and foreign-sourced operations and consisted of the following (in thousands):



	2015		2014		2013
Domestic	$	9,470	$	16,961	$	5,435
Foreign	21,730		14,611		14,404

Total	$	31,200	$	31,572	$	19,839

Schedule of Components of Income Tax Expense (Benefit)

The components of the provision for income taxes for the years ended December 31, 2015, 2014 and 2013, consisted of the following (in thousands):



	2015			2014			2013

Current expense (benefit):
Federal	$	(17	)	$	1,316		$	(747	)
State	747			768			333
Foreign	3,218			2,644			2,324

Total current expense	3,948			4,728			1,910

Deferred expense (benefit):
Federal	3,250			4,078			1,089
State	294			(119		)	278
Foreign	(94		)	(89		)	(8		)

Total deferred expense	3,450			3,870			1,359

Total income tax expense	$	7,398		$	8,598		$	3,269

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, 2015, 2014 and 2013, consisted of the following (in thousands):



	2015			2014			2013

Computed federal income tax expense at statutory rate of 35%	$	10,920		$	11,050		$	6,943
State income taxes	698			438			397
Tax credits	(1,019		)	(888		)	(1,385		)
Foreign tax rate differential	(3,564		)	(1,958		)	(2,374		)
Uncertain tax positions	536			(76		)	(520		)
Deferred compensation insurance assets	182			(81		)	(358		)
Other — including the effect of graduated rates	(355		)	113			566

Total income tax expense	$	7,398		$	8,598		$	3,269

Schedule of Deferred Tax Assets and Liabilities

Deferred income tax assets and liabilities at December 31, 2015 and 2014, consisted of the following temporary differences and carry-forward items (in thousands):



	2015			2014

Deferred income tax assets:
Allowance for uncollectible accounts receivable	$	531		$	366
Accrued compensation expense	5,534			5,492
Inventory differences	2,043			2,401
Net operating loss carryforwards	11,434			13,542
Deferred revenue	118			87
Stock-based compensation expense	2,532			2,479
Uncertain tax positions	—			284
Federal research and development credit carryforward	2,355			1,413
Foreign Tax Credits	600			1,374
Other	5,754			4,173
Total deferred income tax assets	30,901			31,611

Deferred income tax liabilities:
Prepaid expenses	(841		)	(708		)
Property and equipment	(24,467		)	(23,298		)
Intangible assets	(6,495		)	(4,853		)
Other	(1,077		)	(1,150		)
Total deferred income tax liabilities	(32,880		)	(30,009		)
Valuation allowance	(1,981		)	(1,603		)
Net deferred income tax assets (liabilities)	$	(3,960	)	$	(1	)

Reported as:
Deferred income tax assets - Current	$	7,025		$	6,375
Deferred income tax assets - Long-term	—			9
Deferred income tax liabilities - Current	—			—
Deferred income tax liabilities - Long-term	(10,985		)	(6,385		)

Net deferred income tax liabilities	$	(3,960	)	$	(1	)

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, 2015, 2014 and 2013, consisted of the following (in thousands):



Tabular Roll-forward	2015			2014			2013

Unrecognized tax benefits, opening balance	$	1,736		$	2,129		$	2,776
Gross increases in tax positions taken in a prior year	187			142			107
Gross increases in tax positions taken in the current year	763			309			236
Lapse of applicable statute of limitations	(704		)	(844		)	(990		)
Unrecognized tax benefits, ending balance	$	1,982		$	1,736		$	2,129