Debt - Schedule of Future Principal Repayments of Long-Term Debt (Details) $ in Thousands	Apr. 30, 2017 USD ($)
Capital Lease
2017	$ 58
2018	0
2019	0
Total repayments, capital lease	58
Total
2017	550
2018	656
2019	4,426
Total repayments	5,632
Senior Notes
Senior Term Loan
2017	492
2018	656
2019	4,426
Total repayments, senior term loan	5,574
Credit Agreement | Senior Term Loan
Total
Deferred finance costs	$ 181