Name:	knl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	knl_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The number of outstanding awards under the stock option plan for which the employer is contingently obligated to issue shares to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares.

No definition available.

Name:	knl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedNumber
Namespace Prefix:	knl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	knl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedOutstandingRollForward
Namespace Prefix:	knl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The number of share options (or share units) that vested during the reporting period.

No definition available.

Name:	knl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod
Namespace Prefix:	knl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	knl_ShareBasedCompensationArrangementByShareBasedPaymentAwardThanOptionsNonvestedWeightedAverageFairValueAtGrantDateAbstract
Namespace Prefix:	knl_
Data Type:	xbrli:stringItemType
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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

Weighted average grant-date fair value of non-vested options outstanding.

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901