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Schedule of Amortization Expense Next 5 Years (Details)
$ in Thousands
Apr. 30, 2015
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2016 $ 2,320
2017 2,320
2018 2,252
2019 1,980
2020 1,769
Thereafter 10,415
Total Future Amortization $ 21,056