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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,
 20222021
Domestic$(20,196)$(10,967)
Foreign4,079 (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,
 20222021
Current:
Federal$396 $(27)
State14 19 
Foreign(1,722)643 
Total current(1,312)635 
Deferred:
Federal(364)— 
Foreign792 (768)
Total deferred428 (768)
Income tax benefit$(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,
 20222021
Federal statutory rate21 %21 %
Impact of foreign earnings(27)
Change in valuation allowance28 24 
Tax contingencies, net of reversals13 (5)
Corporate restructuring(11)(38)
Expiration of tax attributes(12)(6)
Permanent items(2)
Research and development credits
Stock-based compensation(4)(1)
Other(5)(3)
Effective income tax rate%%
Schedule of Deferred Tax Assets, Liabilities, and Valuation Allowance Significant components of our deferred tax assets and liabilities are as follows: 
 December 31,
 20222021
Deferred tax assets:
Research and experimentation credit and deduction carryforwards$60,041 $62,771 
Net operating loss carryforwards44,424 45,985 
Depreciation and amortization5,568 5,664 
Reserves and accrued expenses1,000 992 
Deferred stock-based compensation821 994 
Foreign tax credit carryforwards163 208 
Other1,201 1,451 
Total gross deferred tax assets113,218 118,065 
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: 
20222021
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 year117 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 year11 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