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Geographic Information (Details)	12 Months Ended
Geographic Information (Details)	Dec. 31, 2021
Segment Reporting [Abstract]
Total revenues, percentage	10.00%

X

- Definition

Total revenues, percentage.

+ References

No definition available.

+ Details

Name:	krnt_TotalRevenuesPercentage
Namespace Prefix:	krnt_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration