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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) before Income Tax, Domestic and Foreign

Domestic and foreign pre-tax loss is as follows:

			Year Ended December 31,
			2022						2021
Domestic			$	(20,196)					$	(10,967)
Foreign			4,079						(8,578)
Domestic and foreign pre-tax loss			$	(16,117)					$	(19,545)

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) attributable to operations is comprised of the following: 

			Year Ended December 31,
			2022						2021
Current:
Federal			$	396					$	(27)
State			14						19
Foreign			(1,722)						643
Total current			(1,312)						635
Deferred:
Federal			(364)						—
Foreign			792						(768)
Total deferred			428						(768)
Income tax benefit			$	(884)					$	(133)

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the U.S. federal statutory income tax rate to our effective income tax rate is as follows: 

			Year Ended December 31,
			2022						2021
Federal statutory rate			21		%				21		%
Impact of foreign earnings			(27)						3
Change in valuation allowance			28						24
Tax contingencies, net of reversals			13						(5)
Corporate restructuring			(11)						(38)
Expiration of tax attributes			(12)						(6)
Permanent items			(2)						4
Research and development credits			4						2
Stock-based compensation			(4)						(1)
Other			(5)						(3)
Effective income tax rate			5		%				1		%

Schedule of Deferred Tax Assets, Liabilities, and Valuation Allowance

Significant components of our deferred tax assets and liabilities are as follows: 

			December 31,
			2022						2021
Deferred tax assets:
Research and experimentation credit and deduction carryforwards			$	60,041					$	62,771
Net operating loss carryforwards			44,424						45,985
Depreciation and amortization			5,568						5,664
Reserves and accrued expenses			1,000						992
Deferred stock-based compensation			821						994
Foreign tax credit carryforwards			163						208
Other			1,201						1,451
Total gross deferred tax assets			113,218						118,065
Deferred tax liabilities:
Foreign earnings			(212)						—
Other			(620)						(812)
Total gross deferred tax liabilities			(832)						(812)
Less valuation allowance			(111,941)						(116,372)
Net deferred tax assets			$	445					$	881

Summary of Uncertain Tax Positions and Interest and Penalties

The following is a summary of the change in our liability for uncertain tax positions and interest and penalties: 

			2022						2021
Uncertain tax positions:
Balance at beginning of year			$	3,646					$	2,711
Accrual for positions taken in a prior year			(214)						825
Accrual for positions taken in current year			117						121
Reversals due to lapse of statute of limitations			(97)						(11)
Reversals due to positions taken in the current year			(1,809)						—
Balance at end of year			$	1,643					$	3,646
Interest and penalties:
Balance at beginning of year			$	101					$	88
Accrual for positions taken in prior year			11						16
Accrual for positions taken in current year			—						—
Reversals due to lapse of statute of limitations			(24)						(3)
Balance at end of year			$	88					$	101

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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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