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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)
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12 Months Ended | ||
|---|---|---|---|
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Jan. 31, 2013
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Jan. 31, 2012
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Jan. 31, 2011
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| CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY [Abstract] | |||
| Purchase of treasury stock (in shares) | 27,448 | 16,861 | 86,406 |