SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Accounting Policies [Abstract]
Anti-dilutive shares excluded from diluted net income per share calculation	80,000	182,000
Common stock issued in connection with exercise or vesting of equity awards	310,018	319,648	337,825
Restricted stock awards vesting period, minimum	4 years
Restricted stock awards vesting period, maximum	5 years
Wholesale shipping and handling costs	$ 62.4	$ 54.8	$ 50.7
Advertising expense	71.5	62.3	54.1
Prepaid advertising	$ 5.8	$ 5.9
Minimum
Accounting Policies [Line Items]
Intangible assets, estimated useful lives	3 years
Maximum
Accounting Policies [Line Items]
Intangible assets, estimated useful lives	15 years
Stock options, vesting term	10 years