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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]

During the years ended December 31, 2014, 2013, and 2012, the aggregate changes in the total gross amount of unrecognized tax benefits are summarized as follows:

	Year Ended December 31,
	2014				2013				2012
Unrecognized tax benefits as of January 1	$	—			$	—			$	—
Gross increases—tax positions in prior years	—				—				—
Gross increases—tax positions in current year	14				—				—
Settlements with taxing authorities	—				—				—
Lapse of statute of limitations	—				—				—
Gross increase from current year acquisition of Videotel	2,473				—				—
Ending balance	$	2,487			$	—			$	—

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) for the years ended December 31, 2014, 2013, and 2012 attributable to income (loss) from operations is presented below.

	Current				Deferred				Total
Year ended December 31, 2014
Federal	$	325			$	(623	)		$	(298	)
State	(2		)		1,036				1,034
Foreign	1,640				(1,092		)		548
	$	1,963			$	(679	)		$	1,284
Year ended December 31, 2013
Federal	$	1,793			$	(497	)		$	1,296
State	242				(52		)		190
Foreign	901				(237		)		664
	$	2,936			$	(786	)		$	2,150
Year ended December 31, 2012
Federal	$	715			$	2,036			$	2,751
State	146				254				400
Foreign	249				(137		)		112
	$	1,110			$	2,153			$	3,263

Schedule of Effective Income Tax Rate Reconciliation

The actual income tax expense differs from the “expected” income tax expense computed by applying the United States Federal corporate income tax rate of 35% to income before tax expense as follows:

	Year Ended December 31,
	2014				2013				2012
Computed “expected” tax expense	$	451			$	2,339			$	2,395
(Decrease) increase in income taxes resulting from:
State income tax expense, net of federal benefit	(31		)		336				674
State research and development, investment credits	(365		)		(309		)		(301		)
Non-deductible meals & entertainment	37				31				22
Non-deductible stock compensation expense	29				178				95
Non-deductible deferred compensation expense	87				—				—
Non-deductible transaction costs	73				170				—
Subpart F income, net of foreign tax credits	296				162				—
Manufacturing deduction	(123		)		—				—
Nontaxable interest income	(105		)		(86		)		—
Foreign tax rate differential	(289		)		(369		)		(27		)
Federal research and development credits	(453		)		(746		)		—
Uncertain tax positions	97				—				—
Provision to tax return adjustments	(317		)		—				(29		)
Change in tax rates	235				—				—
Change in valuation allowance	1,665				491				468
Other	$	(3	)		$	(47	)		$	(34	)
Net income tax expense	$	1,284			$	2,150			$	3,263

Schedule of Income before Income Tax, Domestic and Foreign

The components of income before income tax expense (benefit) determined by tax jurisdiction, are as follows:

	Year Ended December 31,
	2014				2013				2012
United States	$	907			$	5,500			$	7,917
Foreign	418				1,183				(1,074		)
Total	$	1,325			$	6,683			$	6,843

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of deferred tax assets and liabilities as of the dates presented are as follows:

	December 31,
	2014				2013
Deferred tax assets:
Accounts receivable, due to allowance for doubtful accounts	$	664			$	641
Inventories	531				436
Operating loss carry-forwards	1,939				1,392
Stock-based compensation expense	1,743				1,515
Property and equipment, due to difference in depreciation	1,334				—
Research and development, alternative minimum tax credit carry-forwards	3,313				2,600
Foreign tax credit carry-forwards	725				1,442
State tax credit carry-forwards	2,176				2,094
Warranty reserve	682				—
Accrued expenses	505				722
Gross deferred tax assets	13,612				10,842
Less valuation allowance	(4,157		)		(2,700		)
Total deferred tax assets	9,455				8,142
Deferred tax liabilities:
Purchased intangible assets	(6,917		)		(3,129		)
Property and equipment, due to differences in depreciation	(2,410		)		(2,548		)
Other	(130		)		(30		)
Total deferred tax liabilities	(9,457		)		(5,707		)
Net deferred tax (liability) asset	$	(2	)		$	2,435
Net deferred tax asset—current	$	2,772			$	3,060
Net deferred tax asset—noncurrent	$	2,690			$	—
Net deferred tax liability—noncurrent	$	(5,464	)		$	(625	)

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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 income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure of unrecognized tax benefits for which a material change is reasonably possible in the next twelve months, typically including the nature of the uncertainty, the event(s) that could cause a material change, and an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made. An unrecognized tax benefit is the difference between a tax position taken in a tax return and the amounts recognized in the financial statements for which it is more likely than not, based on the technical merits of the position, that the tax position will not be sustained upon examination.

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