REVENUE RECOGNITION, Gift Cards (Details) - USD ($) $ in Thousands	3 Months Ended
May 05, 2018	Apr. 29, 2017
REVENUE RECOGNITION
Balance at beginning of period	$ 56,729	$ 49,869
Issuance of gift cards	9,031	9,298
Revenue recognized	(13,497)	(14,001)
Gift card breakage	(750)	(310)
Balance at end of period	51,513	44,856
Revenue recognized from the beginning liability	$ 8,100	$ 8,400

Amount of breakage recognized related to unredeemed gift cards.

No definition available.

Name:	mik_GiftCardBreakage
Namespace Prefix:	mik_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of gift cards issued during the period.

+ References

No definition available.

+ Details

Name:	mik_GiftCardsIssued
Namespace Prefix:	mik_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized from gift cards redeemed during the period.

+ References

No definition available.

+ Details

Name:	mik_GiftCardsRedeemed
Namespace Prefix:	mik_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of gift cards redeemed and revenue recognized from beginning liability.

+ References

No definition available.

+ Details

Name:	mik_GiftCardsRedeemedRevenueRecognizedFromBeginningLiability
Namespace Prefix:	mik_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of the liability for outstanding gift cards. Retail customers purchase gift cards or gift certificates that can be redeemed at a later date for merchandise or services; those unredeemed represent a liability of the entity because the revenue is being deferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccruedLiabilitiesForUnredeeemedGiftCards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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