Organization and Basis of Presentation (Policies)	9 Months Ended
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of PresentationThe accompanying financial information has been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim reporting purposes. The condensed consolidated financial statements are unaudited. The unaudited condensed consolidated financial statements reflect, in the opinion of the Company’s management, all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of financial position, results of operations, changes in equity, and comprehensive loss and cash flows for each period presented in accordance with United States generally accepted accounting principles (“U.S. GAAP”). All intercompany transactions and balances have been eliminated. The operating results presented in these unaudited interim condensed financial statements are not necessarily indicative of the results that may be expected for any future periods. These interim unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.
Reclassifications	Reclassifications Certain amounts reported in prior years have been reclassified to conform with the presentation in the current year. These reclassifications had no effect on the reported results of operations.
Liquidity and Going Concern	Liquidity and Going Concern The Company has experienced recurring net losses from operations, negative cash flows from operating activities, and accumulated deficit since its inception and expects to continue to incur net losses into the foreseeable future. As of September 30, 2023, the Company had approximately $34.6 million in cash and cash equivalents and $29.0 million in short term investments. The Company has an accumulated deficit of $537.3 million as of September 30, 2023. During the nine months ended September 30, 2023, the Company used $95.4 million cash in operations. Management expects operating losses and negative cash flows to continue for at least the next year as the Company continues to incur costs related to research and commercialization efforts. Management has prepared cash flows forecasts which indicate that based on the Company’s expected operating losses and negative cash flows, there is substantial doubt about the Company’s ability to continue as a going concern within twelve months after the date that the unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2023, are issued. Management’s ability to continue as a going concern is dependent upon its ability to raise additional funding. Management’s plans to raise additional capital to fulfill its operating and capital requirements for at least 12 months include public or private equity or debt financings. However, the Company may not be able to secure such financing in a timely manner or on favorable terms, if at all. See Note 5 to our unaudited condensed consolidated financial statements for a discussion of our recent debt financing included elsewhere in this Quarterly Report on Form 10-Q for more information. Furthermore, if the Company issues equity securities to raise additional funds, its existing stockholders may experience dilution, and the new equity securities may have rights, preferences and privileges senior to those of the Company’s existing stockholders. The unaudited condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business, and do not include any adjustments to reflect the outcome of this uncertainty.
Restructuring	Restructuring On October 9, 2023, the Company committed to a series of cost saving initiatives including a reduction in force (the “Workforce Reduction”) and, as a result of reducing facility costs and discretionary spending unrelated to headcount and combined with the cost savings from the reduction in force the Company initiated in May 2023, such plan is intended to decrease expenses and maintain a streamlined organization to support its business. In connection with the Workforce Reduction, the Company currently estimates it will incur approximately $0.7 million of severance costs for impacted employees, consisting primarily of cash, which the Company expects to recognize in the fourth quarter of 2023. The Company expects to substantially complete the Workforce Reduction by December 31, 2023. The estimates of costs and expenses that the Company expects to incur in connection with the Workforce Reduction are subject to a number of assumptions and actual results may differ materially. The Company may also incur additional costs not currently contemplated due to events that may occur as a result of, or that are associated with, the Workforce Reduction.
Goodwill	Goodwill Goodwill arises when the purchase price of an acquired business exceeds the fair value of the identifiable net assets acquired, with such excess recorded as goodwill on the balance sheet. Goodwill is not subsequently amortized. Goodwill is reviewed for impairment annually (during the fourth quarter) or more frequently if indications of impairment exist. Goodwill is assigned to specific reporting units for purposes of impairment assessment. The Company has determined that it has a single operating segment and a single reporting unit. In testing goodwill for impairment, the Company will first assess qualitative factors to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If the qualitative assessment indicates that it is more likely than not that the fair value of the reporting unit is less than its carrying value, then the Company will perform a quantitative impairment analysis by comparing the fair value of the reporting unit to the carrying value of the reporting unit, including goodwill. An impairment charge for goodwill is recognized for the amount by which the carrying value of the reporting unit exceeds its fair value, not to exceed the total goodwill allocated to the reporting unit. As of September 30, 2023, we performed a qualitative assessment of goodwill impairment which included an evaluation of changes in industry, market and macroeconomic conditions as well as consideration of our financial performance and any significant trends, including a sustained decline in our stock price. Our qualitative assessment indicated that it is more likely than not that the fair value of the reporting unit is less than its carrying value as of September 30, 2023; therefore, we performed a quantitative impairment analysis. The Company determined the fair value of its reporting unit using a combination of the income and market approaches. The Company placed a 50% weighting on the market and income approach methods. The determination of fair value using a market approach requires management to make significant assumptions related to the determination of an appropriate group of peer companies, and market revenue multiples from within the selected group of peer companies. Under the income approach, the Company uses a discounted cash flow method, or DCF, to estimate the fair value of a reporting unit. In applying the DCF method, an identified level of future cash flow is estimated. The cash flow projections are based on ten-year financial forecasts developed by management that include purchasing volume, collections forecasts, capital spending trends, and cost assumptions to support anticipated growth, which are updated annually and reviewed by management. Annual estimated cash flows and a terminal value are then discounted to their present value at an appropriate discount rate to obtain an indication of fair value. The discount rate utilized reflects estimates of required rates of return for investments that are seen as similar to an investment in the reporting unit. Because DCF analyses are based on management’s long-term financial projections and require significant estimates and judgments, the market approach is conducted in addition to the income approach in estimating the fair value of a reporting unit. Under the market approach, the Company uses both a Guideline Public Company Method and Guideline Transactions Method to estimate the fair value of equity and the business enterprise value of a reporting unit. The Guideline Public Company approach uses financial metrics from similar public traded companies to estimate fair value. The Guideline Transaction Method calculates fair value by analyzing the actual prices paid for recent mergers and acquisitions in the industry. The Company believes that the current methodology used in determining the fair value at its reporting unit represent its best estimates. In addition, the Company compares the aggregate fair value of the reporting unit to its overall market capitalization, including an estimated control premium based upon control premiums observed in comparable market transactions and other factors.
Impairment of Long-Lived Assets	Impairment of Long-Lived AssetsThe Company reviews its long-lived assets for impairment when the Company determines a triggering event has occurred. Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset or an asset group may not be recoverable. When a triggering event has occurred, each impairment test is based on a comparison of the future expected undiscounted cash flow to the recorded value of the asset. If the recorded value of the asset is more than the undiscounted cash flow, the asset is written down to its estimated fair value.
Inventories	InventoriesThe Company reviews its inventories for classification purposes. The value of inventories not expected to be realized in cash, sold or consumed during the next 12 months are classified as non-current within Other long-term assets.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13), which amends the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables and available for sale debt securities. For trade receivables and other instruments, entities will be required to use a new forward-looking expected loss model that generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. The Company adopted ASU 2016-13 as of January 1, 2023. The cumulative effect of applying the new credit loss standard was not material and, therefore, did not result in an adjustment to retained earnings. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements or related financial statement disclosures. In accordance with ASU 2016-13, the Company no longer evaluates whether its available-for-sale debt securities in an unrealized loss position are other than temporarily impaired. Instead, the Company assesses whether such unrealized loss positions are credit-related. The credit-related portion of unrealized losses, and any subsequent improvements, are recorded in other income through an allowance account. Unrealized gains and losses that are not credit-related are included in accumulated other comprehensive income.

Organization and Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of PresentationThe accompanying financial information has been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim reporting purposes. The condensed consolidated financial statements are unaudited. The unaudited condensed consolidated financial statements reflect, in the opinion of the Company’s management, all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of financial position, results of operations, changes in equity, and comprehensive loss and cash flows for each period presented in accordance with United States generally accepted accounting principles (“U.S. GAAP”). All intercompany transactions and balances have been eliminated. The operating results presented in these unaudited interim condensed financial statements are not necessarily indicative of the results that may be expected for any future periods. These interim unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Reclassifications

Certain amounts reported in prior years have been reclassified to conform with the presentation in the current year. These reclassifications had no effect on the reported results of operations.

Liquidity and Going Concern

The Company has experienced recurring net losses from operations, negative cash flows from operating activities, and accumulated deficit since its inception and expects to continue to incur net losses into the foreseeable future. As of September 30, 2023, the Company had approximately $34.6 million in cash and cash equivalents and $29.0 million in short term investments.

The Company has an accumulated deficit of $537.3 million as of September 30, 2023. During the nine months ended September 30, 2023, the Company used $95.4 million cash in operations.

Management expects operating losses and negative cash flows to continue for at least the next year as the Company continues to incur costs related to research and commercialization efforts. Management has prepared cash flows forecasts which indicate that based on the Company’s expected operating losses and negative cash flows, there is substantial doubt about the Company’s ability to continue as a going concern within twelve months after the date that the unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2023, are issued. Management’s ability to continue as a going concern is dependent upon its ability to raise additional funding. Management’s plans to raise additional capital to fulfill its operating and capital requirements for at least 12 months include public or private equity or debt financings. However, the Company may not be able to secure such financing in a timely manner or on favorable terms, if at all. See Note 5 to our

unaudited condensed consolidated financial statements for a discussion of our recent debt financing included elsewhere in this Quarterly Report on Form 10-Q for more information.

Furthermore, if the Company issues equity securities to raise additional funds, its existing stockholders may experience dilution, and the new equity securities may have rights, preferences and privileges senior to those of the Company’s existing stockholders.

The unaudited condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business, and do not include any adjustments to reflect the outcome of this uncertainty.

Restructuring

On October 9, 2023, the Company committed to a series of cost saving initiatives including a reduction in force (the “Workforce Reduction”) and, as a result of reducing facility costs and discretionary spending unrelated to headcount and combined with the cost savings from the reduction in force the Company initiated in May 2023, such plan is intended to decrease expenses and maintain a streamlined organization to support its business. In connection with the Workforce Reduction, the Company currently estimates it will incur approximately $0.7 million of severance costs for impacted employees, consisting primarily of cash, which the Company expects to recognize in the fourth quarter of 2023. The Company expects to substantially complete the Workforce Reduction by December 31, 2023. The estimates of costs and expenses that the Company expects to incur in connection with the Workforce Reduction are subject to a number of assumptions and actual results may differ materially. The Company may also incur additional costs not currently contemplated due to events that may occur as a result of, or that are associated with, the Workforce Reduction.

Goodwill

Goodwill arises when the purchase price of an acquired business exceeds the fair value of the identifiable net assets acquired, with such excess recorded as goodwill on the balance sheet. Goodwill is not subsequently amortized. Goodwill is reviewed for impairment annually (during the fourth quarter) or more frequently if indications of impairment exist. Goodwill is assigned to specific reporting units for purposes of impairment assessment. The Company has determined that it has a single operating segment and a single reporting unit.

In testing goodwill for impairment, the Company will first assess qualitative factors to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If the qualitative assessment indicates that it is more likely than not that the fair value of the reporting unit is less than its carrying value, then the Company will perform a quantitative impairment analysis by comparing the fair value of the reporting unit to the carrying value of the reporting unit, including goodwill. An impairment charge for goodwill is recognized for the amount by which the carrying value of the reporting unit exceeds its fair value, not to exceed the total goodwill allocated to the reporting unit.

As of September 30, 2023, we performed a qualitative assessment of goodwill impairment which included an evaluation of changes in industry, market and macroeconomic conditions as well as consideration of our financial performance and any significant trends, including a sustained decline in our stock price. Our qualitative assessment indicated that it is more likely than not that the fair value of the reporting unit is less than its carrying value as of September 30, 2023; therefore, we performed a quantitative impairment analysis. The Company determined the fair value of its reporting unit using a combination of the income and market approaches. The Company placed a 50% weighting on the market and income approach methods. The determination of fair value using a market approach requires management to make significant assumptions related to the determination of an appropriate group of peer companies, and market revenue multiples from within the selected group of peer companies. Under the income approach, the Company uses a discounted cash flow method, or DCF, to estimate the fair value of a reporting unit. In applying the DCF method, an identified level of future cash flow is estimated. The cash flow projections are based on ten-year financial forecasts developed by management that include purchasing volume, collections forecasts, capital spending trends, and cost assumptions to support anticipated growth, which are updated annually and reviewed by management. Annual estimated cash flows and a terminal value are then discounted to their present value at an appropriate discount rate to obtain an indication of fair value. The discount rate utilized reflects estimates of required rates of return for investments that are seen as similar to an investment in the reporting unit. Because DCF analyses are based on management’s long-term financial projections and require significant estimates and judgments, the market approach is conducted in addition to the income approach in estimating the fair value of a reporting unit. Under the market approach, the Company uses both a Guideline Public Company Method and Guideline Transactions Method to estimate the fair value of equity and the business enterprise value of a reporting unit. The Guideline Public Company approach uses financial metrics from similar public traded companies to estimate fair value. The Guideline Transaction Method calculates fair value by analyzing the actual prices paid for recent mergers and

acquisitions in the industry. The Company believes that the current methodology used in determining the fair value at its reporting unit represent its best estimates. In addition, the Company compares the aggregate fair value of the reporting unit to its overall market capitalization, including an estimated control premium based upon control premiums observed in comparable market transactions and other factors.

Impairment of Long-Lived Assets

Impairment of Long-Lived AssetsThe Company reviews its long-lived assets for impairment when the Company determines a triggering event has occurred. Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset or an asset group may not be recoverable. When a triggering event has occurred, each impairment test is based on a comparison of the future expected undiscounted cash flow to the recorded value of the asset. If the recorded value of the asset is more than the undiscounted cash flow, the asset is written down to its estimated fair value.

Inventories

InventoriesThe Company reviews its inventories for classification purposes. The value of inventories not expected to be realized in cash, sold or consumed during the next 12 months are classified as non-current within Other long-term assets.

Recently Adopted Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13), which amends the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables and available for sale debt securities. For trade receivables and other instruments, entities will be required to use a new forward-looking expected loss model that generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. The Company adopted ASU 2016-13 as of January 1, 2023.

The cumulative effect of applying the new credit loss standard was not material and, therefore, did not result in an adjustment to retained earnings. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements or related financial statement disclosures. In accordance with ASU 2016-13, the Company no longer evaluates whether its available-for-sale debt securities in an unrealized loss position are other than temporarily impaired. Instead, the Company assesses whether such unrealized loss positions are credit-related. The credit-related portion of unrealized losses, and any subsequent improvements, are recorded in other income through an allowance account. Unrealized gains and losses that are not credit-related are included in accumulated other comprehensive income.