Stock-Based Compensation - Stock-Based Compensation (Details) (Parenthetical)	3 Months Ended	6 Months Ended
Jul. 31, 2021	Jul. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Percentage of targets level shares achievement by performance based on target shares granted	100.00%	100.00%

Share based compensation arrangement by share based payment award equity instruments other than options percentage of targets level achievement of performance based granted share.

No definition available.

Name:	kirk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfTargetsLevelAchievementOfPerformanceBasedGrantedShare
Namespace Prefix:	kirk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration