Income Taxes (Reconciliation Of The Total Amount Of Gross Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Income Taxes [Abstract]
Gross unrecognized tax benefits, beginning balance	$ 5,075	$ 3,107	$ 4,663
Increases in tax positions for prior years	1,590	2,742
Increases in tax positions for current year	56	86	1,071
Decreases in tax positions for prior years	(208)
Expiration of statutes of limitation	(791)	(860)	(2,770)
Settlements	(1,990)		(223)
Changes due to translation of foreign currencies	(47)		366
Gross unrecognized tax benefits, ending balance	$ 3,685	$ 5,075	$ 3,107

Unrecognized Tax Benefits, Changes Due To Translation Of Foreign Currencies

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

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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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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