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Income Taxes | 12 Months Ended
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Dec. 31, 2023
Income Taxes |
Income Taxes | Note 17. Income Taxes Loss before provision for income taxes was attributed to the following jurisdictions for the years ended December 31, 2023, 2022 and 2021 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
United States | ​ | $ | (70,227) | ​ | $ | (34,854) | ​ | $ | (273,531)
Foreign | ​ |  | (29,121) | ​ |  | (240) | ​ |  | (311)
​ | ​ | $ | (99,348) | ​ | $ | (35,094) | ​ | $ | (273,842)
​ The provision for income taxes consists of the following for the years ended December 31, 2023, 2022 and 2021 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
Current: |  | ​ |  |  | ​ |  |  | ​ |
Federal | ​ | $ | — | ​ | $ | — | ​ | $ | —
State | ​ |  | 73 | ​ |  | 70 | ​ |  | 112
Foreign | ​ |  | 2,263 | ​ |  | 2,634 | ​ |  | 1,783
Total current expense | ​ |  | 2,336 | ​ |  | 2,704 | ​ |  | 1,895
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Deferred: | ​ |  |  | ​ |  |  | ​ |  |
Federal | ​ |  | (278) | ​ |  | (7,712) | ​ |  | (11,646)
State | ​ |  | (423) | ​ |  | (191) | ​ |  | (1,564)
Foreign | ​ |  | (1,396) | ​ |  | (1,545) | ​ |  | (1,126)
Change in valuation allowance | ​ |  | — | ​ |  | 8,983 | ​ |  | 14,127
Total deferred expense | ​ |  | (2,097) | ​ |  | (465) | ​ |  | (209)
Total provision for income taxes | ​ | $ | 239 | ​ | $ | 2,239 | ​ | $ | 1,686
​ Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2023 and 2022 are shown below (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2022
Deferred tax assets: |  | ​ |  |  | ​ |
Net operating loss carryforward | ​ | $ | 53,804 | ​ | $ | 40,927
Expenses recognized for granting of options and warrants | ​ |  | 5,654 | ​ |  | 4,847
Interest expense | ​ |  | 1,850 | ​ |  | 4,081
Unrealized losses | ​ |  | 3,918 | ​ |  | 9,365
Capitalized research & experimentation | ​ |  | 5,224 | ​ |  | 2,724
R&D tax credit | ​ |  | 3,761 | ​ |  | 2,046
Accrued expenses and reserves | ​ |  | 806 | ​ |  | 860
Goodwill | ​ | ​ | 3,526 | ​ | ​ | —
Lease liability | ​ |  | 5,076 | ​ |  | 4,712
Total deferred tax assets | ​ |  | 83,619 | ​ |  | 69,562
Valuation allowance | ​ |  | (77,194) | ​ |  | (61,700)
​ | ​ | $ | 6,425 | ​ | $ | 7,862
Deferred tax liabilities: | ​ |  |  | ​ |  |
Goodwill | ​ | $ | — | ​ | $ | (2,779)
Right-of-use assets | ​ |  | (4,674) | ​ |  | (4,382)
Intangibles | ​ |  | (2,926) | ​ |  | (3,906)
Unremitted foreign earnings | ​ |  | (985) | ​ |  | (777)
Total deferred tax liability | ​ |  | (8,585) | ​ |  | (11,844)
Net deferred tax liability | ​ | $ | (2,160) | ​ | $ | (3,982)
​ Our net deferred tax liability as presented in our consolidated balance sheet consists of the following items (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2022
Deferred tax assets | ​ | $ | 656 | ​ | $ | 947
Deferred tax liabilities | ​ |  | (2,816) | ​ |  | (4,929)
Net deferred tax liability | ​ | $ | (2,160) | ​ | $ | (3,982)
​ The Company has recorded a net deferred tax liability in jurisdictions where taxable temporary differences from indefinite-lived intangible assets do not support the realization of deferred tax assets which have finite carryover periods. In addition, the Company has recorded a net deferred tax liability in jurisdictions where taxable temporary differences exceed deductible temporary differences. The provision for (benefit from) income taxes differs from that computed using the federal statutory rate applied to loss before provision for income taxes as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2022 |  | 2021
Computed tax benefit at federal statutory rate | ​ | $ | (20,863) | ​ | $ | (7,370) | ​ | $ | (57,507)
State tax, net of federal benefit | ​ |  | (277) | ​ |  | 296 | ​ |  | (1,222)
Non-deductible loss on debt extinguishment | ​ |  | — | ​ |  | — | ​ |  | 50,817
Stock compensation | ​ |  | 1,660 | ​ |  | 1,881 | ​ |  | (7,543)
Deemed foreign dividend income | ​ |  | 1,874 | ​ |  | — | ​ |  | 198
R&D tax credit | ​ |  | (793) | ​ |  | (590) | ​ |  | —
Permanent differences and other | ​ |  | (172) | ​ |  | 352 | ​ |  | 813
Transaction cost | ​ |  | 20 | ​ |  | 160 | ​ |  | —
Executive compensation | ​ |  | 40 | ​ |  | 83 | ​ |  | 1,894
Rate changes | ​ |  | (471) | ​ |  | (113) | ​ |  | 105
Impairment of goodwill | ​ | ​ | 3,614 | ​ | ​ | — | ​ | ​ | —
Contingencies | ​ |  | (613) | ​ |  | (1,443) | ​ |  | 8
Valuation allowance | ​ |  | 16,220 | ​ |  | 8,983 | ​ |  | 14,123
​ | ​ | $ | 239 | ​ | $ | 2,239 | ​ | $ | 1,686
​ At December 31, 2023, the Company has federal and state net operating loss carryforwards of approximately $188.8 million and $117.9 million, respectively. The federal net operating loss carryforwards begin to expire in 2024, unless previously utilized, and the state net operating loss carryforwards will begin to expire in 2028, unless previously utilized. Included in the federal net operating loss carryforward total is $132.0 million generated after 2017 that can be carried over indefinitely and may be used to offset up to 80% of federal taxable income. At December 31, 2023, the Company has foreign net operating loss carryforwards of approximately $36.6 million, which begin to expire in 2031. At December 31, 2023, the Company has federal and California research and development tax credits of approximately $3.8 million and $2.5 million, respectively. The federal research tax credit begins to expire in 2026 unless previously utilized and the California research tax credit has no expiration date. Utilization of the net operating loss (“NOL”) and research and development (“R&D”) carryforwards might be subject to a substantial annual limitation due to ownership change limitations that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (the “Code”), as well as similar state and foreign provisions. These ownership changes may limit the amount of NOL and R&D credit carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In general, an “ownership change” as defined by Section 382 of the Code results from a transaction or series of transactions over a three-year period resulting in an ownership change of more than 50 percentage points of the outstanding stock of a company by certain stockholders or public groups. Since the Company’s formation, the Company has raised capital through the issuance of capital stock on several occasions which, combined with the purchasing stockholders’ subsequent disposition of those shares, may have resulted in such an ownership change, or could result in an ownership change in the future upon subsequent capital stock transactions. The Company has not completed a study to assess whether an ownership change or changes has occurred. If the Company has experienced an ownership change, utilization of the NOL or R&D credit carryforwards would be subject to an annual limitation under Section 382 of the Code, which is determined by first multiplying the value of the Company’s stock at the time of the ownership change by the applicable long-term tax-exempt rate. Any limitation may result in expiration of a portion of the NOL or R&D credit carryforwards before utilization. Further, until a study is completed and any limitation is known, no amounts are being considered as an uncertain tax position or disclosed as an unrecognized tax benefit. Due to the existence of the valuation allowance, future changes in the Company’s unrecognized tax benefits will not impact its effective tax rate. Any carryforwards that will expire prior to utilization as a result of such limitations will be removed from deferred tax assets with a corresponding reduction of the valuation allowance. A reconciliation of the beginning and ending amounts of unrecognized tax positions are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2022 |  | 2021
Unrecognized tax positions, beginning of period | ​ | $ | 3,474 | ​ | $ | 4,932 | ​ | $ | 1,272
Gross increase – current period tax positions | ​ |  | 133 | ​ |  | 214 | ​ |  | 2,220
Gross decrease – prior period tax positions | ​ |  | (718) | ​ |  | (1,672) | ​ |  | —
Gross increase – prior period tax positions | ​ |  | — | ​ |  | — | ​ |  | 1,440
Expiration of statute of limitations | ​ |  | — | ​ |  | — | ​ |  | —
Unrecognized tax positions, end of period | ​ | $ | 2,889 | ​ | $ | 3,474 | ​ | $ | 4,932
​ If recognized, none of the unrecognized tax positions would impact the Company’s income tax benefit or effective tax rate as long as the Company’s deferred tax assets remain subject to a full valuation allowance. The Company does not expect any significant increases or decreases to the Company’s unrecognized tax positions within the next 12 months. We recognize interest accrued related to unrecognized tax benefits (“UTBs”) and penalties as income tax expense. We accrued an immaterial amount of interest expense during 2021 in our statement of operations, and as of December 31, 2023, have an immaterial accrual for interest in our consolidated balance sheet. Due to the NOL carryforwards, the U.S. federal and state returns remain open to examination by the Internal Revenue Service and state taxing jurisdictions for all years beginning with the year ended March 31, 2004. Our foreign subsidiaries are generally subject to examination three years following the year on which the tax obligation originated. The years subject to audit may be extended if the entity substantially understates corporate income tax. The Company’s subsidiary in India is currently under examination by the Office of the Commissioner of Income Tax in India for the 2012-2013, 2013-2014 and 2015-2016 tax periods. Other than India, the Company does not have any foreign subsidiaries currently under audit by their local income tax authorities.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480990/946-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//740/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-21 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 270 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482526/740-270-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-17 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482603/740-30-50-2 + Details
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