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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Taxes |
Components of the provision (benefits) for income taxes |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2023 |  | 2022 |  | 2021 |
Current: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Federal | ​ | $ | (317) | ​ | $ | 848 | ​ | $ | 223 | ​
State | ​ |  | 41 | ​ |  | 34 | ​ |  | 91 | ​
Foreign | ​ |  | (62) | ​ |  | 918 | ​ |  | 3,119 | ​
Total current | ​ |  | (338) | ​ |  | 1,800 | ​ |  | 3,433 | ​
Deferred: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Federal | ​ |  | (9) | ​ |  | (591) | ​ |  | (188) | ​
State | ​ | ​ | (7) | ​ | ​ | (4) | ​ | ​ | (1) | ​
Foreign | ​ |  | 514 | ​ |  | 980 | ​ |  | (2,151) | ​
Total deferred | ​ |  | 498 | ​ |  | 385 | ​ |  | (2,340) | ​
Total provision for income taxes | ​ | $ | 160 | ​ | $ | 2,185 | ​ | $ | 1,093 | ​
Reconciliation of the effective income tax rates and the U.S. statutory federal income tax rate | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2023 |  | 2022 |  | 2021 |
Statutory federal income tax rate |  | 21.0 | % | 21.0 | % | 21.0 | %
State income taxes, net of federal tax benefits |  | (0.6) | ​ | 0.1 | ​ | 0.4 | ​
Valuation allowance |  | (25.7) | ​ | (19.3) | ​ | (25.4) | ​
Stock-based compensation |  | (1.7) | ​ | 0.7 | ​ | (3.2) | ​
Foreign tax rate differential | ​ | 6.1 | ​ | (2.6) | ​ | (8.6) | ​
Foreign tax incentives | ​ | 0.1 | ​ | (3.5) | ​ | (3.2) | ​
Foreign income inclusion | ​ | — | ​ | 18.9 | ​ | 10.4 | ​
Gain from sale of IP | ​ | — | ​ | — | ​ | 16.9 | ​
Tax effect in equity method loss or gain from unconsolidated affiliates | ​ | 0.4 | ​ | (3.0) | ​ | (2.6) | ​
Other | ​ | (0.4) | ​ | (1.8) | ​ | 0.5 | ​
Effective tax rate |  | (0.8) | % | 10.5 | % | 6.2 | %
Deferred tax assets and liabilities | Deferred tax assets and liabilities are summarized below (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, |
​ |  | 2023 |  | 2022 |
Deferred tax assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net operating loss carryforwards | ​ | $ | 14,362 | ​ | $ | 9,571 | ​
Accruals, reserves and other | ​ |  | 4,349 | ​ |  | 4,053 | ​
Credit carryforwards | ​ |  | 325 | ​ |  | 206 | ​
Operating lease liability | ​ |  | 206 | ​ |  | 60 | ​
Gross deferred tax assets | ​ | ​ | 19,242 | ​ | ​ | 13,890 | ​
Valuation allowance | ​ |  | (17,462) | ​ |  | (11,885) | ​
Total deferred tax assets | ​ |  | 1,780 | ​ |  | 2,005 | ​
Deferred tax liabilities: | ​ |  | ​ | ​ |  | ​ | ​
Operating lease right-of-use assets | ​ |  | (323) | ​ |  | (50) | ​
Total net deferred tax assets (included in other assets) | ​ | $ | 1,457 | ​ | $ | 1,955 | ​
​ As of December 31, 2023 we have federal net operating loss (“NOL”) carryforwards of approximately $40.2 million, which will begin to expire in 2025. We have California net operating loss carryforwards of approximately $115,000 as of December 31, 2023.

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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