COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS - Narrative (Details)	6 Months Ended
Mar. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Period of warranty for manufacturing defects	1 year

Representing period of warranty for manufacturing defects.

No definition available.

Name:	klic_PeriodOfWarrantyForManufacturingDefects
Namespace Prefix:	klic_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration