Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Detail)

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Commitments and Contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2014
Commitments And Contingencies Disclosure [Abstract]  
2015 $ 2,291
2016 1,863
2017 1,212
2018 254
2019   
2020 and thereafter   
Minimum operating lease payments $ 5,620