Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Jan. 28, 2017	Jan. 30, 2016
Shareholders' equity [Abstract]:
Preferred Shares, par value (in dollars per share)	$ 0	$ 0
Preferred Shares, authorized (in shares)	100,000	100,000
Preferred Shares, issued (in shares)	0	0
Preferred Shares, outstanding (in shares)	0	0
Class A Common Shares
Shareholders' equity [Abstract]:
Common Shares, par value (in dollars per share)	$ 0	$ 0
Common Shares, authorized (in shares)	250,000	250,000
Common Shares, issued (in shares)	85,038	84,396
Common Shares, outstanding (in shares)	72,447	74,185
Class B Common Shares
Shareholders' equity [Abstract]:
Common Shares, par value (in dollars per share)	$ 0	$ 0
Common Shares, authorized (in shares)	100,000	100,000
Common Shares, issued (in shares)	7,733	7,733
Common Shares, outstanding (in shares)	7,733	7,733
Treasury Shares
Shareholders' equity [Abstract]:
Common Shares, outstanding (in shares)	12,591	10,211

Face amount per share of no-par value common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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