Fair Value Measurement - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2012	Jan. 31, 2011
Change in estimate	$ (532)	$ (760)
Current portion of notes payable	1,349	2,000
Short-term borrowings	14,617	15,544
Accrued Liabilities
Fair value of contingent consideration as the present value of the expected contingent payments	510
Other Long Term Liabilities
Fair value of contingent consideration as the present value of the expected contingent payments	$ 5,610

Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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+ Details

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References+ Details