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Benefit Plans (Details) - Schedule of Expected Benefit Payments (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2015
Schedule of Expected Benefit Payments [Abstract]  
2015 $ 207us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016 1,068us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 1,079us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 1,201us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 1,201us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
2020 – 2024 $ 5,869us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive