Nature of Business and Organization and Basis of Presentation (Policies)	3 Months Ended
Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The unaudited Condensed Consolidated Financial Statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of the Company, its wholly-owned subsidiaries and all other entities in which the Company has a controlling financial interest, including the accounts of any Variable Interest Entity (“VIE”) in which the Company has a controlling financial interest and for which it is the primary beneficiary. These unaudited Condensed Consolidated Financial Statements do not include all disclosures that are normally included in annual audited financial statements prepared in accordance with GAAP and should be read in conjunction with the Company’s audited Consolidated Financial Statements for the year ended December 31, 2022, included in the Company’s Form 10-K filed with Securities and Exchange Commission (“SEC”) on March 9, 2023 (“Form 10-K”). Accordingly, the Condensed Consolidated Balance Sheet as of December 31, 2022, has been derived from the Company’s annual audited Consolidated Financial Statements but does not contain all of the footnote disclosures from the annual financial statements. In the opinion of the Company, the unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of its financial position, its results of operations, and cash flows for the periods presented. The accounting policies used in the preparation of these unaudited Condensed Consolidated Financial Statements are the same as those disclosed in the audited Consolidated Financial Statements for the year ended December 31, 2022, included in the Form 10-K, except as described below. Certain reclassifications have been made to prior periods in the Consolidated Financial Statements and accompanying notes to conform with the current presentation. Buildings and Leasehold improvements within Property and Equipment, Net were previously presented separately for the year ended December 31, 2022. Beginning 2023, the two lines were conformed to report these two balances together.
Principles of Consolidation	All intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with GAAP requires management to make estimates and assumptions, which affect the reported amounts in the financial statements. Estimates are based on historical experience, where applicable, and other assumptions which management believes are reasonable under the circumstances. On an ongoing basis management evaluates its estimates, including those related to the: (i) realization of tax assets and estimates of tax liabilities; (ii) valuation of equity securities; (iii) recognition and disclosure of contingent liabilities, including litigation reserves; (iv) fair value of related party notes payable and notes payable; (v) fair value of options granted to employees and non-employees; (vi) fair value of warrants, and (vii) incremental borrowing rate used to measure operating lease liabilities. Such estimates often require the selection of appropriate valuation methodologies and financial models and may involve significant judgment in evaluating ranges of assumptions and financial inputs. Actual results may differ from those estimates under different assumptions, financial inputs, or circumstances. Given the global economic climate, unpredictable nature and unknown duration of the COVID-19 pandemic, estimates are subject to additional volatility. As of the date the Company’s unaudited Condensed Consolidated Financial Statements were issued, the Company is not aware of any specific event or circumstance that would require it to update its estimates or judgments or to revise the carrying value of its assets or liabilities. However, these estimates and judgments may change as new events occur and additional information is obtained. Actual results could differ from these estimates and any such differences may have a material impact on the Company’s unaudited Condensed Consolidated Financial Statements.
Inventory and Inventory Valuation	Inventory and Inventory Valuation Inventory is stated at the lower of cost or net realizable value (“LCNRV”) and consists of raw materials, work-in-progress, and finished goods. The Company primarily computes cost using standard cost, which approximates cost on the first-in, first-out (“FIFO”) basis. Net realizable value (“NRV”) is the estimated selling price of inventory in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The Company assesses the valuation of inventory and periodically adjusts its value for estimated excess and obsolete inventory based upon expectations of future demand and market conditions, as well as damaged or otherwise impaired goods. As of March 31, 2023, substantially all of the Company’s inventory balance is classified as raw materials. Inventory is included in Other current assets on the unaudited Condensed Consolidated Balance Sheet.
Stock-Based Compensation	Stock-Based Compensation Forfeiture rate - Effective January 1, 2023, stock-based compensation expense is reduced for forfeitures only when they occur. This change of accounting policy resulted in the recognition of a cumulative increase of prior stock-based compensation expenses totaling $1.8 million, which was recorded in the unaudited Condensed Consolidated Statement of Operations and Comprehensive Income for the three months ended March 31, 2023.
Income Tax	Income Tax There was no income tax provision impact on the unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) for the three months ended March 31, 2023 and 2022. The difference in the Company’s effective tax rate from the federal statutory rate of 21% is due to the ratio of domestic and international loss before taxes. The Company records a full valuation allowance to reflect limited benefits for income taxes in jurisdictions that historically reported losses and a provision for income taxes in jurisdictions that are profitable. The income tax provision for each period was the combined calculated tax expenses/benefits for various jurisdictions. The Company is subject to taxation and files income tax returns with the U.S. federal government, the state of California and China. The Company’s income tax returns are open to examination by the relevant tax authorities until the expiration of the applicable statute of limitations, which is generally three years after the filing of the tax return. As of March 31, 2023, the Company is not under any tax audits on its income tax returns. All of the Company’s prior year tax returns, from 2016 through 2021, are open under Chinese tax law.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently issued accounting pronouncements not yet adopted In December 2022, the FASB issued ASU No. 2022-06, Deferral of the Sunset Date of Reference Rate Reform (Topic 848) (ASU 2022-06). ASU 2022-06 provides optional expedients and exceptions for applying GAAP to transactions affected by reference rate (e.g., LIBOR) reform if certain criteria are met, for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. ASU 2022-06 deferred the sunset date of Topic 848 from December 31, 2022 to December 31, 2024. ASU 2022-06 is effective as of December 21, 2022 through December 31, 2024. We continue to evaluate transactions or contract modifications occurring as a result of reference rate reform and determine whether to apply the optional guidance on an ongoing basis.
Fair Value Measurements	Fair Value Measurements The Company applies the provisions of ASC 820, Fair Value Measurement, which defines a single authoritative definition of fair value, sets out a framework for measuring fair value and expands on required disclosures about fair value measurements. The provisions of ASC 820 relate to financial assets and liabilities as well as other assets and liabilities carried at fair value on a recurring and nonrecurring basis. The standard clarifies that fair value is an exit price representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1Valuations for assets and liabilities traded in active exchange markets, or interest in open-end mutual funds that allow a company to sell its ownership interest back at net asset value on a daily basis. Valuations are obtained from readily available pricing sources for market transactions involving identical assets, liabilities, or funds. Level 2Valuations for assets and liabilities traded in less active dealer, or broker markets, such as quoted prices for similar assets or liabilities or quoted prices in markets that are not active. Level 2 instruments typically include U.S. Government and agency debt securities and corporate obligations. Valuations are usually obtained through market data of the investment itself as well as market transactions involving comparable assets, liabilities or funds. Level 3Valuations for assets and liabilities that are derived from other valuation methodologies, such as option pricing models, discounted cash flow models or similar techniques, and not based on market exchange, dealer, or broker-traded transactions. Level 3 valuations incorporate certain assumptions and projections in determining the fair value assigned to such assets or liabilities. Fair value estimates are made at a specific point in time based on relevant market information and information about the financial or nonfinancial asset or liability.

Nature of Business and Organization and Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The unaudited Condensed Consolidated Financial Statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of the Company, its wholly-owned subsidiaries and all other entities in which the Company has a controlling financial interest, including the accounts of any Variable Interest Entity (“VIE”) in which the Company has a controlling financial interest and for which it is the primary beneficiary.

These unaudited Condensed Consolidated Financial Statements do not include all disclosures that are normally included in annual audited financial statements prepared in accordance with GAAP and should be read in conjunction with the Company’s audited Consolidated Financial Statements for the year ended December 31, 2022, included in the Company’s Form 10-K filed with Securities and Exchange Commission (“SEC”) on March 9, 2023 (“Form 10-K”). Accordingly, the Condensed Consolidated Balance Sheet as of December 31, 2022, has been derived from the Company’s annual audited Consolidated Financial Statements but does not contain all of the footnote disclosures from the annual financial statements.

In the opinion of the Company, the unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of its financial position, its results of operations, and cash flows for the periods presented. The accounting policies used in the preparation of these unaudited Condensed Consolidated Financial Statements are the same as those disclosed in the audited Consolidated Financial Statements for the year ended December 31, 2022, included in the Form 10-K, except as described below.

Certain reclassifications have been made to prior periods in the Consolidated Financial Statements and accompanying notes to conform with the current presentation. Buildings and Leasehold improvements within Property and Equipment, Net were previously presented separately for the year ended December 31, 2022. Beginning 2023, the two lines were conformed to report these two balances together.

Principles of Consolidation

All intercompany transactions and balances have been eliminated upon consolidation.

Use of Estimates

The preparation of the financial statements in conformity with GAAP requires management to make estimates and assumptions, which affect the reported amounts in the financial statements.

Estimates are based on historical experience, where applicable, and other assumptions which management believes are reasonable under the circumstances. On an ongoing basis management evaluates its estimates, including those related to the: (i) realization of tax assets and estimates of tax liabilities; (ii) valuation of equity securities; (iii) recognition and disclosure of contingent liabilities, including litigation reserves; (iv) fair value of related party notes payable and notes payable; (v) fair value of options granted to employees and non-employees; (vi) fair value of warrants, and (vii) incremental borrowing rate used to measure operating lease liabilities. Such estimates often require the selection of appropriate valuation methodologies and financial models and may involve significant judgment in evaluating ranges of assumptions and financial inputs. Actual results may differ from those estimates under different assumptions, financial inputs, or circumstances.

Given the global economic climate, unpredictable nature and unknown duration of the COVID-19 pandemic, estimates are subject to additional volatility. As of the date the Company’s unaudited Condensed Consolidated Financial Statements were issued, the Company is not aware of any specific event or circumstance that would require it to update its estimates or judgments or to revise the carrying value of its assets or liabilities. However, these estimates and judgments may change as new events occur and additional information is obtained. Actual results could differ from these estimates and any such differences may have a material impact on the Company’s unaudited Condensed Consolidated Financial Statements.

Inventory and Inventory Valuation

Inventory is stated at the lower of cost or net realizable value (“LCNRV”) and consists of raw materials, work-in-progress, and finished goods. The Company primarily computes cost using standard cost, which approximates cost on the first-in, first-out (“FIFO”) basis. Net realizable value (“NRV”) is the estimated selling price of inventory in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The Company assesses the valuation of inventory and periodically adjusts its value for estimated excess and obsolete inventory based upon expectations of future demand and market conditions, as well as damaged or otherwise impaired goods. As of March 31, 2023, substantially all of the Company’s inventory balance is classified as raw materials. Inventory is included in Other current assets on the unaudited Condensed Consolidated Balance Sheet.

Stock-Based Compensation

Forfeiture rate - Effective January 1, 2023, stock-based compensation expense is reduced for forfeitures only when they occur. This change of accounting policy resulted in the recognition of a cumulative increase of prior stock-based compensation expenses totaling $1.8 million, which was recorded in the unaudited Condensed Consolidated Statement of Operations and Comprehensive Income for the three months ended March 31, 2023.

Income Tax

There was no income tax provision impact on the unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) for the three months ended March 31, 2023 and 2022. The difference in the Company’s effective tax rate from the federal statutory rate of 21% is due to the ratio of domestic and international loss before taxes. The Company records a full valuation allowance to reflect limited benefits for income taxes in jurisdictions that historically reported losses and a provision for income taxes in jurisdictions that are profitable. The income tax provision for each period was the combined calculated tax expenses/benefits for various jurisdictions.

The Company is subject to taxation and files income tax returns with the U.S. federal government, the state of California and China. The Company’s income tax returns are open to examination by the relevant tax authorities until the expiration of the applicable statute of limitations, which is generally three years after the filing of the tax return. As of March 31, 2023, the Company is not under any tax audits on its income tax returns. All of the Company’s prior year tax returns, from 2016 through 2021, are open under Chinese tax law.

Recent Accounting Pronouncements

Recently issued accounting pronouncements not yet adopted

In December 2022, the FASB issued ASU No. 2022-06, Deferral of the Sunset Date of Reference Rate Reform (Topic 848) (ASU 2022-06). ASU 2022-06 provides optional expedients and exceptions for applying GAAP to transactions affected by reference rate (e.g., LIBOR) reform if certain criteria are met, for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. ASU 2022-06 deferred the sunset date of Topic 848 from December 31, 2022 to December 31, 2024. ASU 2022-06 is effective as of December 21, 2022 through December 31, 2024. We continue to evaluate transactions or contract modifications occurring as a result of reference rate reform and determine whether to apply the optional guidance on an ongoing basis.

Fair Value Measurements

The Company applies the provisions of ASC 820, Fair Value Measurement, which defines a single authoritative definition of fair value, sets out a framework for measuring fair value and expands on required disclosures about fair value measurements. The provisions of ASC 820 relate to financial assets and liabilities as well as other assets and liabilities carried at fair value on a recurring and nonrecurring basis. The standard clarifies that fair value is an exit price representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would

use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1Valuations for assets and liabilities traded in active exchange markets, or interest in open-end mutual funds that allow a company to sell its ownership interest back at net asset value on a daily basis. Valuations are obtained from readily available pricing sources for market transactions involving identical assets, liabilities, or funds.

Level 2Valuations for assets and liabilities traded in less active dealer, or broker markets, such as quoted prices for similar assets or liabilities or quoted prices in markets that are not active. Level 2 instruments typically include U.S. Government and agency debt securities and corporate obligations. Valuations are usually obtained through market data of the investment itself as well as market transactions involving comparable assets, liabilities or funds.

Level 3Valuations for assets and liabilities that are derived from other valuation methodologies, such as option pricing models, discounted cash flow models or similar techniques, and not based on market exchange, dealer, or broker-traded transactions. Level 3 valuations incorporate certain assumptions and projections in determining the fair value assigned to such assets or liabilities.

Fair value estimates are made at a specific point in time based on relevant market information and information about the financial or nonfinancial asset or liability.

- Definition

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

+ References + Details

- Definition

Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.

+ References + Details

- Definition

Disclosure of accounting policy for award under share-based payment arrangement. Includes, but is not limited to, methodology and assumption used in measuring cost.

+ References + Details