Income Taxes (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Schedule of reconciliation of beginning and ending amounts of gross unrecognized tax benefits
Beginning balance	$ 2,740us-gaap_UnrecognizedTaxBenefits	$ 3,602us-gaap_UnrecognizedTaxBenefits	$ 3,216us-gaap_UnrecognizedTaxBenefits
Additions for tax positions of prior years		959	475
Additions for tax positions taken in the current year	128
Lapse of statute of limitations	(34)	(1,214)	(98)
Settlements		(605)	(51)
Non U.S. currency exchange fluctuations	(177)	(2)	60
Ending balance	$ 2,657us-gaap_UnrecognizedTaxBenefits	$ 2,740us-gaap_UnrecognizedTaxBenefits	$ 3,602us-gaap_UnrecognizedTaxBenefits

Unrecognized tax benefits increase decrease resulting from foreign currency transaction.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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