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DOCUMENT AND ENTITY INFORMATION - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 01, 2022 | Nov. 14, 2022 | Apr. 02, 2022
Entity Addresses [Line Items] |  |  |
Entity Registrant Name | KULICKE AND SOFFA INDUSTRIES, INC. |  |
Document Type | 10-K/A |  |
Document Annual Report | true |  |
Document Transition Report | false |  |
Amendment Flag | true |  |
Document Period End Date | Oct. 01, 2022 |  |
Entity File Number | 000-00121 |  |
Entity Central Index Key | 0000056978 |  |
Entity Incorporation, State or Country Code | PA |  |
Entity Address, Address Line One | 23A Serangoon North Avenue 5 |  |
Entity Address, Address Line Two | #01-01 |  |
Entity Address, Country | SG |  |
Entity Address, Postal Zip Code | 554369 |  |
City Area Code | 215 |  |
Local Phone Number | 784-6000 |  |
Title of 12(b) Security | Common Stock, Without Par Value |  |
Trading Symbol | KLIC |  |
Security Exchange Name | NASDAQ |  |
Entity Well-known Seasoned Issuer | Yes |  |
Entity Voluntary Filers | No |  |
Entity Current Reporting Status | Yes |  |
Entity Public Float |  |  | $ 3,279.6
Entity Filer Category | Large Accelerated Filer |  |
Entity Emerging Growth Company | false |  |
Entity Small Business | false |  |
Entity Interactive Data Current | Yes |  |
Entity Shell Company | false |  |
Entity Tax Identification Number | 23-1498399 |  |
ICFR Auditor Attestation Flag | true |  |
Document Fiscal Period Focus | FY |  |
Document Fiscal Year Focus | 2022 |  |
Entity Common Stock, Shares Outstanding |  | 57,018,988 |
Entity Address, City or Town | Singapore |  |
Current Fiscal Year End Date | --10-01 |  |
Amendment Description | Kulicke and Soffa Industries, Inc. (the “Company”, “we”, “us”, “our” or “K&S”) is filing this Amendment No. 1 on Form 10-K/A (this “Amendment” or “Form 10-K/A”) to our Annual Report on Form 10-K for the fiscal year ended October 1, 2022, which was filed with the U.S. Securities and Exchange Commission (the “SEC”) on November 17, 2022 (the “Original Form 10-K”) to make certain changes as described below.During the third quarter of fiscal year 2023, in response to comment letters from and ongoing discussions with the staff of the SEC, the Company reconsidered the guidance under ASC 280, Segment Reporting, and determined that certain prior period conclusions about the Company’s operating and reportable segments were erroneous. As a result, the Company had incorrectly presented certain segment-related disclosures in the notes to our previously issued consolidated financial statements, included in the Original Form 10-K. In light of the foregoing, management reassessed the effectiveness of the Company’s internal control over financial reporting as of October 1, 2022, based on the framework established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). As a result of that reassessment, management identified a material weakness related to the Company’s segment reporting and, accordingly, concluded that our disclosure controls and procedures were not effective as of October 1, 2022 and that the Company did not maintain effective internal control over financial reporting as of October 1, 2022. A “material weakness” is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company's annual or interim financial statements will not be prevented or detected on a timely basis. The Company is filing this Amendment to the Original Form 10-K for the purpose of amending the Original Form 10-K to: (i) amend Part II, Item 8 “Financial Statements and Supplementary Data” to reissue the Report of Independent Registered Public Accounting Firm as it pertains to PricewaterhouseCoopers LLP’s (“PwC”) opinion on the effectiveness of the Company’s internal control over financial reporting (“ICFR”) as of October 1, 2022; and (ii) amend and restate Part II, Item 9A “Controls and Procedures” of the Original Form 10-K to reflect management’s conclusion that the Company’s ICFR and disclosure controls and procedures were not effective as of the October 1, 2022 due to the material weakness in ICFR, and to describe the Company’s remediation plan for addressing such material weakness.As required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Company has included the entire text of Part I, Item IA, Part II, Item 7, Part II, Item 8, Part II, Item 9A of the Original Form 10-K in this Amendment. However, there have been no changes to the text of such items other than the amendments as stated in the immediately preceding paragraph, and as further discussed below. The Company has evaluated the materiality of the incorrect presentation of its segment-related disclosures in the notes to its consolidated financial statements and has concluded that it did not result in a material misstatement of the Company’s previously issued consolidated financial statements. Notwithstanding the above, the Company has determined that it would revise its notes to the consolidated financial statements to correct the presentation of its segment-related disclosures and will additionally: (i) amend Part II, Item 7 “Management's Discussion and Analysis of Financial Condition and Results of Operations” to revise the segment-related information within the “Results of Operations”; and (ii) revise segment-related information in Note 4: Goodwill and Intangible Assets and Note 16: Segment Information.The Company’s principal executive officer and principal financial officer are providing new currently dated certifications. In addition, the Company is filing a new consent from PwC. Accordingly, this Amendment amends Items 15 “Exhibits, Financial Statement Schedules” in the Original Form 10-K to reflect the filing of the new certifications and consent. Except as specifically noted above, this Amendment does not reflect events that occurred subsequent to the filing of the Original Form 10-K, nor does it modify or update disclosures in the Original Form 10-K in any way. Among other things, risk factors and forward-looking statements made in the Original Form 10-K have not been revised to reflect events that occurred or facts that became known to the Company after the filing of the Original Form 10-K, and any such forward looking statements should be read in their historical context. Accordingly, this Amendment should be read in conjunction with the Company’s other filings made with the SEC subsequent to the filing of the Original Form 10-K. |  |
Principal Executive Offices |  |  |
Entity Addresses [Line Items] |  |  |
Entity Address, Address Line One | 1005 Virginia Dr. |  |
Entity Address, Postal Zip Code | 19034 |  |
Entity Address, State or Province | PA |  |
Entity Address, City or Town | Fort Washington |  |

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