Nature of Operations and Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation In the opinion of management, the unaudited interim condensed consolidated financial statements reflect all adjustments of a normal recurring nature that are necessary for a fair presentation of the results for the interim periods presented. All significant intercompany transactions and balances are eliminated in consolidation. However, the results of operations included in such financial statements may not necessary be indicative of annual results. The Company uses the same accounting policies in preparing quarterly and annual financial statements. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the U.S. GAAP have been condensed or omitted.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as the related disclosure of contingent assets and liabilities. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to the bad debt allowance, collectability of notes receivable, sales returns, fair values of financial instruments, equity investments, stock-based compensation, intangible assets and goodwill, useful lives of intangible assets and property and equipment, asset retirement obligations, income taxes, and contingent liabilities, among others. The Company bases its estimates on assumptions, both historical and forward looking, that are believed to be reasonable, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities.
Reclassification	Reclassifications Certain prior year amounts have been reclassified for comparative purposes to conform to the current-period financial statement presentation.
Inventory	Inventory Inventories, which include the costs of material, labor and overhead, are stated at the lower of cost or net realizable value, with cost generally computed on a FIFO basis. Estimated losses from obsolete and slow-moving inventories are recorded to reduce inventory values to their estimated net realizable value and are charged to costs of revenue. At the point of loss recognition, a new cost basis for that inventory is established and subsequent changes in facts and circumstances do not result in a recovery in carrying value.
Revenue	Revenue For product sales, the acquired EV entities consider practical and contractual limitations in determining whether there is an alternative use for the product. For example, long-term design and build contracts are typically highly customized to a customer’s specifications. For contracts with no alternative use and an enforceable right to payment for work performed to date, including a reasonable profit if the contract were terminated at the customer’s convenience for reason other than nonperformance, the acquired EV entities recognize revenue over time. All other product sales are recognized at a point in time. For contracts recognized over time, the acquired EV entities have historically used the cost-to-total cost method to recognize the revenue over the life of the contract. For contracts recognized at a point in time, the acquired EV entities recognize revenue when control passes to the customer, which is generally based on shipping terms that address when title and risk and rewards pass to the customer. However, the acquired EV entities also consider certain customer acceptance provisions as certain contracts with customers include installation, testing, certification or other acceptance provisions. In instances where contractual terms include a provision for customer acceptance, the acquired EV entities consider whether they have previously demonstrated that the product meets objective criteria specified by either the seller or customer in assessing whether control has passed to the customer. For service contracts, the acquired EV entities recognize revenue as the services are rendered if the customer is benefiting from the service as it is performed, or otherwise upon completion of the service. Separately priced extended warranties are recognized as a separate performance obligation over the warranty period. The transaction price in the acquired EV entities' contracts consists of fixed consideration and the impact of variable consideration including returns, rebates and allowances, and penalties. Variable consideration is generally estimated using a probability-weighted approach based on historical experience, known trends, and current factors including market conditions and status of negotiations. For design and build contracts, the acquired entities may at times collect progress payments from the customer throughout the term of the contract, resulting in contract assets or liabilities depending on the timing of the payments. Contract assets consist of unbilled amounts when revenue recognized exceeds customer billings. Contract liabilities consist of advance payments and billings in excess of revenue recognized. Design and engineering costs for highly complex products to be sold under a long-term production-type contract are deferred and amortized in a manner consistent with revenue recognition of the related contract or anticipated contract. Other design and development costs are deferred only if there is a contractual guarantee for reimbursement. Costs to obtain a contract (e.g., commissions) for contracts greater than one year are deferred and amortized in a manner consistent with revenue recognition of the related contract.
Product Warranties	Product WarrantiesThe acquired EV entities' standard product warranty terms generally include post-sales support and repairs or replacement of a product at no additional charge for a specified period of time. Accruals for estimated expenses related to product warranties are made at the time revenue is recognized and are recorded as a component of costs of revenue. The acquired EV entities estimate the liability for warranty claims based on standard warranties, the historical frequency of claims and the cost to replace or repair products under warranty. Factors that influence the warranty liability include the number of units sold, the length of warranty term, historical and anticipated rates of warranty claims and the cost per claim.
Recently Adopted Accounting Pronouncements and Accounting Pronouncements Not Yet Adopted	Recently Adopted Accounting Pronouncements In December 2019, the FASB issued ASU No. 2019-12, which simplifies the accounting for income taxes by removing certain exceptions currently provided for in ASC 740 and by amending certain other requirements of ASC 740. The Company adopted ASU 2019-12 effective January 1, 2021. The effect of the adoption of ASU 2019-12 was not material. In August 2020, the FASB issued ASU No. 2020-06, which simplifies the accounting for convertible instruments by reducing the number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models results in fewer embedded conversion features being separately recognized from the host contract as compared with current U.S. GAAP. Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope exception from derivative accounting, and (2) convertible debt instruments issued with substantial premiums for which the premiums are recorded as additional paid-in capital. ASU 2020-06 also amends the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. The Company adopted ASU 2020-06 effective January 1, 2021. As the Company had no outstanding convertible instruments as of that date, the adoption of ASU 2020-06 had no effect. In May 2021, the FASB issued ASU No. 2021-04, which provides guidance on modifications or exchanges of a freestanding equity-classified written call option that is not within the scope of another Topic. An entity should treat a modification of the terms or conditions or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as an exchange of the original instrument for a new instrument, and provides further guidance on measuring the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange. ASU 2021-04 also provides guidance on the recognition of the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange on the basis of the substance of the transaction, in the same manner as if cash had been paid as consideration. The Company adopted ASU 2021-04 on January 1, 2022. The Company has no freestanding equity-classified written call options. The effect will largely depend on the terms of written call options or financings issued or modified in the future. Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU No. 2016-13, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss model which requires the use of forward-looking information to calculate credit loss estimates. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in earlier recognition of credit losses. In November 2019, the FASB issued ASU 2019-10, which defers the effective date of ASU 2016-13 to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, for public entities which meet the definition of a smaller reporting company on the date the ASU was issued. The Company will adopt ASU 2016-13 effective January 1, 2023. Management is currently evaluating the effect of the adoption of ASU 2016-13 on the consolidated financial statements. The effect will largely depend on the composition and credit quality of our investment portfolio and the economic conditions at the time of adoption. In October 2021, the FASB issued ASU No. 2021-08, which will require companies to apply the definition of a performance obligation under ASC Topic 606 to recognize and measure contract assets and contract liabilities (i.e., deferred revenue) relating to contracts with customers that are acquired in a business combination. Under current U.S. GAAP, an acquirer generally recognizes assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers, at fair value on the acquisition date. ASU No. 2021-08 will result in the acquirer recording acquired contract assets and liabilities on the same basis that would have been recorded by the acquiree before the acquisition under ASC Topic 606. ASU No. 2021-08 is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company is currently evaluating the impact of this ASU on its financial statements and the effects will be based upon the contract assets and liabilities acquired in the future.

Nature of Operations and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

In the opinion of management, the unaudited interim condensed consolidated financial statements reflect all adjustments of a normal recurring nature that are necessary for a fair presentation of the results for the interim periods presented. All significant intercompany transactions and balances are eliminated in consolidation. However, the results of operations included in such financial statements may not necessary be indicative of annual results.

The Company uses the same accounting policies in preparing quarterly and annual financial statements. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the U.S. GAAP have been condensed or omitted.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as the related disclosure of contingent assets and liabilities. Actual results could differ from those estimates.

On an ongoing basis, the Company evaluates its estimates, including those related to the bad debt allowance, collectability of notes receivable, sales returns, fair values of financial instruments, equity investments, stock-based compensation, intangible assets and goodwill, useful lives of intangible assets and property and equipment, asset retirement obligations, income taxes, and contingent liabilities, among others. The Company bases its estimates on assumptions, both historical and forward looking, that are believed to be reasonable, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities.

Reclassification

Reclassifications

Certain prior year amounts have been reclassified for comparative purposes to conform to the current-period financial statement presentation.

Inventory

Inventories, which include the costs of material, labor and overhead, are stated at the lower of cost or net realizable value, with cost generally computed on a FIFO basis. Estimated losses from obsolete and slow-moving inventories are recorded to reduce inventory values to their estimated net realizable value and are charged to costs of revenue. At the point of loss recognition, a new cost basis for that inventory is established and subsequent changes in facts and circumstances do not result in a recovery in carrying value.

Revenue

For product sales, the acquired EV entities consider practical and contractual limitations in determining whether there is an alternative use for the product. For example, long-term design and build contracts are typically highly customized to a customer’s specifications. For contracts with no alternative use and an enforceable right to payment for work performed to date, including a reasonable profit if the contract were terminated at the customer’s convenience for reason other than nonperformance, the acquired EV entities recognize revenue over time. All other product sales are recognized at a point in time.

For contracts recognized over time, the acquired EV entities have historically used the cost-to-total cost method to recognize the revenue over the life of the contract.

For contracts recognized at a point in time, the acquired EV entities recognize revenue when control passes to the customer, which is generally based on shipping terms that address when title and risk and rewards pass to the customer. However, the acquired EV entities also consider certain customer acceptance provisions as certain contracts with customers include installation, testing, certification or other acceptance provisions. In instances where contractual terms include a provision for customer acceptance, the acquired EV entities consider whether they have previously demonstrated that the product meets objective criteria specified by either the seller or customer in assessing whether control has passed to the customer.

For service contracts, the acquired EV entities recognize revenue as the services are rendered if the customer is benefiting from the service as it is performed, or otherwise upon completion of the service. Separately priced extended warranties are recognized as a separate performance obligation over the warranty period.

The transaction price in the acquired EV entities' contracts consists of fixed consideration and the impact of variable consideration including returns, rebates and allowances, and penalties. Variable consideration is generally estimated using a probability-weighted approach based on historical experience, known trends, and current factors including market conditions and status of negotiations.

For design and build contracts, the acquired entities may at times collect progress payments from the customer throughout the term of the contract, resulting in contract assets or liabilities depending on the timing of the payments. Contract assets consist of unbilled amounts when revenue recognized exceeds customer billings. Contract liabilities consist of advance payments and billings in excess of revenue recognized.

Design and engineering costs for highly complex products to be sold under a long-term production-type contract are deferred and amortized in a manner consistent with revenue recognition of the related contract or anticipated contract. Other design and development costs are deferred only if there is a contractual guarantee for reimbursement. Costs to obtain a contract (e.g., commissions) for contracts greater than one year are deferred and amortized in a manner consistent with revenue recognition of the related contract.

Product Warranties

Product WarrantiesThe acquired EV entities' standard product warranty terms generally include post-sales support and repairs or replacement of a product at no additional charge for a specified period of time. Accruals for estimated expenses related to product warranties are made at the time revenue is recognized and are recorded as a component of costs of revenue. The acquired EV entities estimate the liability for warranty claims based on standard warranties, the historical frequency of claims and the cost to replace or repair products under warranty. Factors that influence the warranty liability include the number of units sold, the length of warranty term, historical and anticipated rates of warranty claims and the cost per claim.

Recently Adopted Accounting Pronouncements and Accounting Pronouncements Not Yet Adopted

Recently Adopted Accounting Pronouncements

In December 2019, the FASB issued ASU No. 2019-12, which simplifies the accounting for income taxes by removing certain exceptions currently provided for in ASC 740 and by amending certain other requirements of ASC 740. The Company adopted ASU 2019-12 effective January 1, 2021. The effect of the adoption of ASU 2019-12 was not material.

In August 2020, the FASB issued ASU No. 2020-06, which simplifies the accounting for convertible instruments by reducing the number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models results in fewer embedded conversion features being separately recognized from the host contract as compared with current U.S. GAAP. Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope exception from derivative accounting, and (2) convertible debt instruments issued with substantial premiums for which the premiums are recorded as additional paid-in capital. ASU 2020-06 also amends the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. The Company adopted ASU 2020-06 effective January 1, 2021. As the Company had no outstanding convertible instruments as of that date, the adoption of ASU 2020-06 had no effect.

In May 2021, the FASB issued ASU No. 2021-04, which provides guidance on modifications or exchanges of a freestanding equity-classified written call option that is not within the scope of another Topic. An entity should treat a modification of the terms or conditions or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as an exchange of the original instrument for a new instrument, and provides further guidance on measuring the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange. ASU 2021-04 also provides guidance on the recognition of the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange on the basis of the substance of the transaction, in the same manner as if cash had been paid as consideration. The Company adopted ASU 2021-04 on January 1, 2022. The Company has no freestanding equity-classified written call options. The effect will largely depend on the terms of written call options or financings issued or modified in the future.

Accounting Pronouncements Not Yet Adopted

In June 2016, the FASB issued ASU No. 2016-13, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss model which requires the use of forward-looking information to calculate credit loss estimates. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in earlier recognition of credit losses. In November 2019, the FASB issued ASU 2019-10, which defers the effective date of ASU 2016-13 to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, for public entities which meet the definition of a smaller reporting company on the date the ASU was issued. The

Company will adopt ASU 2016-13 effective January 1, 2023. Management is currently evaluating the effect of the adoption of ASU 2016-13 on the consolidated financial statements. The effect will largely depend on the composition and credit quality of our investment portfolio and the economic conditions at the time of adoption.

In October 2021, the FASB issued ASU No. 2021-08, which will require companies to apply the definition of a performance obligation under ASC Topic 606 to recognize and measure contract assets and contract liabilities (i.e., deferred revenue) relating to contracts with customers that are acquired in a business combination. Under current U.S. GAAP, an acquirer generally recognizes assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers, at fair value on the acquisition date. ASU No. 2021-08 will result in the acquirer recording acquired contract assets and liabilities on the same basis that would have been recorded by the acquiree before the acquisition under ASC Topic 606. ASU No. 2021-08 is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company is currently evaluating the impact of this ASU on its financial statements and the effects will be based upon the contract assets and liabilities acquired in the future.