Capital Leases - Schedule of Non-cancellable Capital Leases (Details) - USD ($)	Feb. 28, 2019	May 31, 2018
Leases [Abstract]
Non-cancellable capital leases	$ 7,480,097	$ 3,893,814
Less: Current portion	(1,948,191)	(2,160,807)
Non-cancelable capital leases, net of current portion	$ 5,531,906	$ 1,733,007

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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