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Summary of Significant Accounting Policies (Details 2) - USD ($)
$ in Thousands
Jan. 31, 2016
Apr. 30, 2015
2016 $ 6 $ 23
2017 24 24
2018 25 25
2019 27 26
2020 16 16
Total minimum payments 98 114
Less: current portion (24) (23)
Long-term maturity $ 64 $ 91