Commitments and Contingencies - Additional Information (Detail)		9 Months Ended
	Feb. 29, 2008 Time	Oct. 01, 2017 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Lease expiration date	Feb. 28, 2019
Number of times lease can be renewed | Time	6
Lease renewal period	5 years
Lease amendment description		In May 2017, the Company entered into an amendment to the lease to, among other things, extend the primary lease term, and consequently the construction deadline, to a date between February 29, 2020 and June 30, 2020
Non refundable payment		$ 40,000
Purchase the premises		$ 4,500,000
Due diligence period		120 days
Sale agreement termination, date		June 30, 2020