Income Taxes (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2013	Jan. 31, 2012
Balance of gross unrecognized tax benefits, beginning of period	$ 6,464	$ 7,283
Gross amounts of increases in unrecognized tax benefits as a result of tax positions taken in the current period	3,616	431
Decrease due to expiration of statute of limitation	(737)	(319)
Decrease due to settlement	0	(876)
Effect of currency translation	21	(55)
Balance of gross unrecognized tax benefits, end of period	$ 9,364	$ 6,464

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Gross amount of decreases in unrecognized tax benefits resulting from foreign currency translation.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

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