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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

The geographical breakdown of income (loss) before income taxes is as follows (in thousands):

			Years Ended December 31,
			2020						2019						2018
Domestic income (loss)			$	15,455					$	(20,345)					$	(29,658)
Foreign income			3,684						3,933						3,123
Income (loss) before income taxes			$	19,139					$	(16,412)					$	(26,535)

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes consisted of the following (in thousands):

			Years Ended December 31,
			2020						2019						2018
Current provision for income taxes:
State			$	40					$	49					$	44
Foreign			1,057						1,716						953
Total current			1,097						1,765						997
Deferred tax expense (benefit):
Federal			2						3						(13)
Foreign			224						(361)						98
Total deferred			226						(358)						85
Provision for income taxes			$	1,323					$	1,407					$	1,082

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the statutory federal income taxes and the provision for income tax is as follows (in thousands, except percentages):

			Years Ended December 31,
			2020												2019												2018
			Amount						Percentage						Amount						Percentage						Amount						Percentage
Tax at statutory rate			$	4,019					21.0		%				$	(3,447)					21.0		%				$	(5,572)					21.0		%
State tax - net of federal benefits			31						0.2						42						(0.3)						39						(0.1)
Foreign rate differential			507						2.6						363						(2.2)						258						(1.0)
Changes in federal valuation allowance			(3,281)						(17.1)						4,695						(28.6)						6,430						(24.2)
Change in federal tax rate due to Tax Cuts and Jobs Act			—						—						—						—						—						—
Stock-based compensation			781						4.1						578						(3.5)						1,950						(7.3)
Non-deductible meals and entertainment expenses			219						1.2						287						(1.8)						342						(1.3)
Other permanent items			364						1.9						257						(1.6)						351						(1.3)
Federal tax credits - net of uncertain tax positions			(1,035)						(5.4)						(1,809)						11.0						(2,634)						9.9
Expenses for uncertain tax positions			—						—						166						(1.0)						137						(0.5)
Other			(282)						(1.5)						275						(1.6)						(219)						0.7
			$	1,323					7.0		%				$	1,407					(8.6)		%				$	1,082					(4.1)		%

Schedule of Deferred Tax Assets and Liabilities

Deferred tax balances are comprised of the following (in thousands):

			December 31, 2020						December 31, 2019
Deferred tax assets:
Net operating loss carryforwards			$	42,251					$	46,273
Research and development credits, net of uncertain tax positions			27,743						25,386
Accruals, reserves, and other			12,026						12,021
Stock-based compensation			2,362						3,306
Depreciation and amortization			1,537						2,219
Operating lease liability			6,049						7,061
Gross deferred tax assets			91,968						96,266
Valuation allowance			(82,938)						(85,743)
Total deferred tax assets			9,030						10,523
Deferred tax liabilities:
Deferred contract acquisition costs			(2,068)						(2,245)
Operating lease right-of-use asset			(5,996)						(7,088)
Other			(22)						(19)
Total deferred tax liabilities			(8,086)						(9,352)
Net deferred tax assets			$	944					$	1,171

Summary of Income Tax Contingencies

The activity related to the unrecognized tax benefits is as follows (in thousands):

			Years Ended December 31,
			2020						2019						2018
Gross unrecognized tax benefits—beginning balance			$	4,441					$	4,191					$	3,782
Increases (decreases) related to tax positions from prior years			(268)						(280)						(266)
Increases related to tax positions taken during current year			412						530						675
Decreases related to tax positions taken during the current year			—						—						—
Gross unrecognized tax benefits—ending balance			$	4,585					$	4,441					$	4,191

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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 for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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