Other Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2012		Jan. 31, 2011
Movement in Capitalized Computer Software, Net [Roll Forward]
Capitalized computer software, net, beginning of year	$ 6,787		$ 8,530
Software costs capitalized during the year	3,399		2,527
Amortization of software costs	(4,135)		(4,236)
Effect of changes in foreign currencies	(205)		(34)
Capitalized computer software, net, end of year	5,846		6,787
Other Assets, Noncurrent Disclosure [Abstract]
Severance pay fund	35,510	[1]	44,674	[1]
Deposits	6,972		12,711
Deferred financing costs, net	14,060		9,725
Capitalized computer software, net	5,846		6,787
Long-term tax receivable	18,810		18,898
Long-term restricted cash	9,753		8,406
Long-term indemnification asset	4,689		0
Other	5,815		6,663
Other Assets	101,455		107,864
Capitalized Computer Software, Accumulated Amortization	$ 59,840		$ 56,294

[1] Represents deposits into insurance policies to fund severance liability (see Note 16, Other Long-Term Liabilities).