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Financial Assets and Liabilities - Investments Maturity Table (Details)
$ in Thousands
Jan. 31, 2016
USD ($)
Amortized Cost  
Due in 1 year or less $ 78,384
Due in 2-5 years 42,914
Due in 6-10 years 1,724
Total 123,022
Fair Value  
Due in 1 year or less 78,349
Due in 2-5 years 42,871
Due in 6-10 years 1,728
Total $ 122,948