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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Obligations not reflected on the Consolidated Balance Sheet) (Details) $ in Thousands | Sep. 30, 2023 USD ($)
--- | ---
Commitments and Contingencies Disclosure [Abstract] |
Inventory purchase obligation | $ 182,567
Inventory purchase obligation, Payments due by fiscal year 2024 | 182,567
Inventory purchase obligation, Payments due by fiscal year 2025 | 0
Inventory purchase obligation, Payments due by fiscal year 2026 | 0
Inventory purchase obligation, Payments due by fiscal year 2027 | 0
Inventory purchase obligation, Payments due by fiscal year thereafter | $ 0

X
- Definition The amount of inventory purchase obligation of future minimum payments due reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDue
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The inventory purchase obligation of future minimum payment which are due for the current reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDueCurrent
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The inventory purchase obligation of future minimum payment which are due for four years reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInFourYears
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The inventory purchase obligation of future minimum payment which are due for three years reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInThreeYears
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The inventory purchase obligation of future minimum payment which are due for two years reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInTwoYears
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The inventory purchase obligation of future minimum payment which are due for fiscal year reported as of the period. + References No definition available. + Details
Name: | klic_InventoryPurchaseObligationFutureMinimumPaymentsDueThereafter
Namespace Prefix: | klic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration