ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES We are a life science technology company that is designing, developing, and manufacturing advanced sequencing solutions that enable scientists and clinical researchers to improve their understanding of the genome and ultimately, resolve genetically complex problems. Our products and technology under development stem from two highly differentiated core technologies focused on accuracy, quality, and completeness, which include our HiFi long-read sequencing technology and our Sequencing by Binding (SBBTM) short-read sequencing technology. Our products address solutions across a broad set of applications including human genetics, plant and animal sciences, infectious disease and microbiology, oncology, and other emerging applications. Our focus is on creating some of the world's most advanced sequencing systems to provide our customers with the most complete and accurate view of genomes, transcriptomes, and epigenomes. Our customers include academic and governmental research institutions, commercial testing and service laboratories, genome centers, public health labs, hospitals and clinical research institutes, contract research organizations (CROs), pharmaceutical companies, and agricultural companies. References in this report to “PacBio,” “we,” “us,” the “Company,” and “our” refer to Pacific Biosciences of California, Inc. and its consolidated subsidiaries. Basis of Presentation and Consolidation Our unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States, or U.S. GAAP, as set forth in the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC. The unaudited condensed consolidated financial statements include the accounts of Pacific Biosciences and our wholly owned subsidiaries. Certain information and footnote disclosures typically included in our audited financial statements have been condensed or omitted. The accompanying unaudited condensed consolidated financial statements have been prepared on a consistent basis with the December 31, 2023 audited consolidated financial statements and include all adjustments, consisting of only normal recurring adjustments, necessary to fairly state our financial position, results of operations, comprehensive loss, and cash flows for the period, but are not necessarily indicative of the results to be expected for the entire year or any future periods. All intercompany transactions and balances have been eliminated. Certain prior period amounts have been reclassified to conform to current period presentation. The financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2023. Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes to the financial statements. On an ongoing basis, we evaluate our significant estimates, including those relating to the valuation of inventory, fair value of contingent consideration, valuation of acquired intangible assets, useful lives assigned to long-lived assets, asset impairment assessments, computation of provisions for income taxes, and valuations related to our convertible senior notes. While the extent of the potential impact of current macroeconomic conditions on our business is highly uncertain, we considered information available related to assumptions and estimates used to determine the results reported and asset valuations as of March 31, 2024. Actual results could differ materially from these estimates. Cash, Cash Equivalents, Restricted Cash and Investments We consider all highly liquid investments purchased with an original maturity of 90 days or less to be cash equivalents. Cash equivalents may be comprised of money market funds, certificates of deposit, commercial paper, corporate bonds and notes, and government agencies’ securities. We classify our investments in debt securities as available-for sale and report the investments at fair value in current assets. We evaluate our available-for-sale investments in unrealized loss positions and assess whether the unrealized loss is credit-related. Unrealized gains and losses that are not credit-related are recognized in accumulated other comprehensive loss in stockholders’ equity. Realized gains and losses, expected credit losses, as well as interest income, on available-for-sale securities are also reported in other income (expense), net. The cost used in the determination of gains and losses of securities sold is based on the specific identification method. The cost of marketable securities is adjusted for the amortization of premiums and discounts to expected maturity. Premium and discount amortization is recorded in other income (expense), net. We have the ability to hold, and do not intend to sell investments in unrealized loss positions before the recovery of their amortized cost bases. Our investment portfolio at any point in time contains investments in cash deposits, money market funds, commercial paper, corporate debt securities and U.S. government and agency securities with high credit ratings. We have established guidelines regarding diversification and maturities of investments with the objectives of maintaining safety and liquidity, while maximizing yield. Restricted cash includes cash that is not readily available for use in the Company’s operating activities. Restricted cash is primarily comprised of cash pledged under letters of credit. Concentration and Other Risks For the three months ended March 31, 2024, no customer exceeded 10% of total revenue during the period. For the three months ended March 31, 2023, no customer exceeded 10% of total revenue during the period. As of March 31, 2024, 42% of our accounts receivable were from domestic customers, compared to 49% as of December 31, 2023. As of March 31, 2024, no customer represented 10% or greater of our net accounts receivable, while one customer represented approximately 10% of our net accounts receivable as of December 31, 2023. Recent Accounting Pronouncements Accounting Pronouncements Pending Adoption In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU requires entities to expand its existing income tax disclosures, specifically related to the rate reconciliation and income taxes paid. This authoritative guidance will be effective for us in fiscal year 2025, with early adoption permitted. The Company is currently evaluating the impact of the ASU but does not expect any material impact upon adoption. Significant Accounting Policies There have been no changes to our significant accounting policies as disclosed in the Annual Report on Form 10-K for the fiscal year ended December 31, 2023.