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EMPLOYEE BENEFITS (Detail) - Schedule of Share-based Compensation, Stock Options, Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Outstanding—Beginning of year	269	726	824
Outstanding—Beginning of year (in Dollars per share)	$ 13.15	$ 10.16	$ 10.14
Exercised	(100)	(457)	(98)
Exercised (in Dollars per share)	$ 14.30	$ 8.41	$ 10.00
Outstanding—End of year	169	269	726
Outstanding—End of year (in Dollars per share)	$ 12.46	$ 13.15	$ 10.16
Exercisable—End of year	169	269	726
Exercisable—End of year (in Dollars per share)	$ 12.46	$ 13.15	$ 10.16

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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X

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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X

- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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