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Summary of Significant Accounting Policies (Scheduled Future Amortization of Amortizable Other Assets) (Details)
$ in Thousands
Jan. 31, 2016
USD ($)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]  
2016 $ 75
2017 37
2018 2
2019 2
2020 2
Thereafter 9
Other Assets $ 127