Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The following table presents the Company’s U.S. and foreign components of consolidated income before income taxes and the provision for (benefit from) income taxes.

	Years Ended December 31,
	2020		2019		2018
	(In thousands)
Income before income taxes:
U.S.	$	32,046	$	12,180	$	12,139
Foreign	87		76		(699)
Total income before income taxes	$	32,133	$	12,256	$	11,440
Current tax benefit:
Federal	$	(148)	$	(120)	$	(297)
State	5		3		(2)
Foreign	40		66		25
Current tax benefit	(103)		(51)		(274)
Deferred tax provision (benefit):
Federal	5,547		949		(9,773)
State	302		445		(606)
Total deferred tax provision (benefit)	5,849		1,394		(10,379)
Total provision for (benefit from) income taxes	$	5,746	$	1,343	$	(10,653)

Schedule of Effective Income Tax Rate Reconciliation

The following table presents a reconciliation of income taxes computed at the statutory federal income tax rate to the effective tax rate implied by the accompanying Consolidated Statements of Operations.

	Years Ended December 31,
	2020		2019		2018
U.S. federal taxes at statutory rate	21	%	21	%	21	%
State income tax, net of federal benefit	1		4		(6)
Deferred tax re-measurement - Change in tax rates	—		—		1
Foreign rate differential	—		—		(1)
Change in tax status of foreign operations	—		—		(102)
Stock-based compensation	(2)		(1)		(3)
Non-deductible expenses	1		2		1
Federal research credits	(3)		(16)		(6)
Valuation allowance	—		—		3
Other	—		1		(1)
Effective tax rate	18	%	11	%	(93	%)

Schedule of Deferred Tax Assets and Liabilities

The following table presents the components of the Company’s net deferred tax asset, which is presented in other assets, non-current on the Consolidated Balance Sheets.

	December 31,
	2020		2019
	(In thousands)
Deferred tax assets:
Net operating loss carry forwards	$	6,285	$	6,488
Accruals and reserves	3,852		8,922
Operating lease liabilities	3,848		2,750
Research and development, and foreign tax credit carry forwards	8,851		7,533
Acquired intangibles	641		804
Charitable contributions	45		26
Total deferred tax assets	23,522		26,523
Valuation allowance	(4,403)		(3,933)
Net deferred tax assets	19,119		22,590
Deferred tax liabilities:
Depreciation on property and equipment	(2,985)		(1,854)
Right of use asset	(3,489)		(2,443)
Unrecognized gain on translation of foreign currency	(54)		(33)
Goodwill	(1,561)		(1,363)
Total deferred tax liabilities	(8,089)		(5,693)
Net deferred tax asset	$	11,030	$	16,897

Summary of Operating Loss Carryforwards

The following table presents the Company’s net operating loss carryforwards by taxing authority.

	December 31,
	2020		2019
	(In thousands)
Federal	$	19,913	$	21,153
California	11,043		11,840
Ireland	10,376		9,363
Total net operating loss carryforwards	$	41,332	$	42,356

Summary of Tax Credit Carryforwards

The following table presents the Company’s R&D credit by taxing authority, minimum tax credit and foreign tax credit carryforwards.

	December 31,
	2020		2019
	(In thousands)
Federal	$	5,733	$	4,761
California	3,947		3,509
Total credit carryforwards	$	9,680	$	8,270

Schedule of Unrecognized Tax Benefits Roll Forward

The following table presents the aggregate changes in the balance of the gross unrecognized tax benefits.

	Years Ended December 31,
	2020		2019		2018
	(In thousands)
Gross unrecognized tax benefits, beginning of year	$	963	$	1,162	$	911
Additions:
Prior year tax position	9		27		—
Current year tax position	167		163		251
Reductions:
Prior year tax position	(5)		(389)		—
Gross unrecognized tax benefits, end of year	$	1,134	$	963	$	1,162