Commitments (Minimum Future Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013
Operating Leases, Future Minimum Payments Due
Operating leases payments due 2014	$ 6,166
Operating leases payments due 2015	5,455
Operating leases payments due 2016	1,212
Operating leases payments due 2017	543
Operating leases payments due 2018	543
Operating leases payments due Thereafter	90
Total minimum lease payments	14,009
Less sublease revenues	(296)
Total	$ 13,713

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Operating Leases, Future Minimum Payments Due, Net of Sublease Payments

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