Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Components of Income Tax Expense (Benefit)

The components of income tax expense are as follows:

	Year Ended December 31,
	2018			2017			2016
Current:
Federal	$	4,423		$	6,020		$	6,084
State		1,038			507			983
Foreign		626			3,159			838
		6,087			9,686			7,905
Deferred:
Federal		1,961			17,034			4,765
State		(73	)		643			184
Foreign		275			(470	)		62
		2,163			17,207			5,011
Total income tax expense	$	8,250		$	26,893		$	12,916

Schedule of Income before Income Tax, Domestic and Foreign

The income before tax is comprised of the following:

	Year Ended December 31,
	2018		2017		2016
Domestic operations	$	49,089	$	57,079	$	47,599
Foreign operations	$	4,257	$	2,723	$	2,269

Schedule of Effective Income Tax Rate Reconciliation

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. federal income tax rate of 21% for the year ended December 31, 2018, and 35% for years ended December 31, 2017 and 2016 to income before provision for income taxes as follows:

	Year Ended December 31,
	2018			2017			2016
Federal income tax provision at statutory rate	$	11,203		$	20,931		$	17,454
State taxes, net of federal effect		747			573			822
Foreign taxes, net of federal effect		17			(238	)		(1,613	)
Domestic manufacturing benefit		—			(1,569	)		(1,244	)
FDII Deduction, related to the Tax Act		(2,217	)		—			—
GILTI income net of S250 deduction, related to the Tax Act		113			—			—
Section 162(m)		526			—			—
Research tax credit		(2,298	)		(1,559	)		(692	)
Deferred tax true-up		57			41			(1,644	)
Remeasurement of deferred tax balances, related to the Tax Act		(33	)		8,020			—
Transition tax on foreign earnings, related to the Tax Act		138			(106	)		—
Other		(3	)		800			(167	)
Provision for income taxes	$	8,250		$	26,893		$	12,916
Effective tax rate		15	%		45	%		26	%

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities are comprised of the following:

	December 31,
	2018			2017
Research and development credit carryforward	$	198		$	216
Reserves and accruals not currently deductible		1,969			1,883
Deferred revenue		1,201			1,075
Domestic net operating loss carryforwards		832			892
Foreign net operating loss and credit carryforwards		3,146			2,551
Intangibles		4,402			5,388
Share-based compensation		1,259			1,500
Inventory obsolescence reserve		2,774			3,260
Other		810			1,135
Gross deferred tax assets		16,591			17,900
Valuation allowance for deferred tax assets		(3,172	)		(2,447	)
Deferred tax assets after valuation allowance		13,419			15,453
Gross deferred tax liabilities		(609	)		(574	)
Net deferred tax assets	$	12,810		$	14,879

Schedule of Unrecognized Tax Benefits Roll Forward

The total amount of unrecognized tax benefits are as follows:

	December 31,
	2018			2017			2016
Balance, beginning of the period	$	4,880		$	4,827		$	5,236
Gross increases—tax positions in prior period		496			171			118
Gross decreases—tax positions in prior period		(61	)		(362	)		(735	)
Gross increases—current-period tax positions		213			244			208
Lapse of statute of limitations		—			—			—
Balance, end of the period	$	5,528		$	4,880		$	4,827