Commitments and Contingencies Commitment and Contingencies (Tables)

12 Months Ended

Jan. 31, 2013

Schedule of Rent Expense [Table Text Block]

Rent expense under operating leases was as follows:

Year ended January 31,	2013		2012		2011
Rent expense	$	26,597	$	27,535	$	29,446

Schedule of Sublease Income [Table Text Block]

We entered into agreements to sublease portions of our facility sites. Rental income under these agreements was as follows:

Year ended January 31,	2013		2012		2011
Rental income	$	313	$	427	$	1,691

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum lease payments and sublease income under all non-cancelable operating leases are approximately as follows:

Fiscal years ending January 31,	Lease Payments		Sublease Income
2014	$	25,230	$	142
2015	18,215		—
2016	14,436		—
2017	8,604		—
2018	4,129		—
Thereafter	5,378		—
Total	$	75,992	$	142