Income Taxes - Additional Information (Detail) - USD ($)
|
7 Months Ended |
12 Months Ended |
Dec. 31, 2017 |
May 31, 2018 |
May 31, 2017 |
May 31, 2016 |
| Income Tax Contingency [Line Items] |
|
|
|
|
| U.S. federal corporate tax rate |
34.00%
|
28.60%
|
34.00%
|
34.00%
|
| Decrease in deferred tax assets due to change in tax rate |
|
$ 780,195
|
|
|
| Change in valuation allowance |
|
(808,548)
|
$ 356,169
|
$ 533,357
|
| Liability for unrecognized tax benefits |
|
0
|
0
|
|
| Liability for payment of interest and penalties |
|
$ 0
|
$ 0
|
|
| Scenario, Plan [Member] |
|
|
|
|
| Income Tax Contingency [Line Items] |
|
|
|
|
| U.S. federal corporate tax rate |
|
21.00%
|
|
|
| Domestic Tax Authority [Member] |
|
|
|
|
| Income Tax Contingency [Line Items] |
|
|
|
|
| Net operating loss carryforwards |
|
$ 4,200,000
|
|
|
| Operating loss carryforwards expiration period |
|
2030
|
|
|
| Income tax examination period under examination |
|
2015
|
|
|
| Foreign Tax Authority [Member] | United Kingdom [Member] |
|
|
|
|
| Income Tax Contingency [Line Items] |
|
|
|
|
| Income tax examination period under examination |
|
2013
|
|
|
| State [Member] |
|
|
|
|
| Income Tax Contingency [Line Items] |
|
|
|
|
| Net operating loss carryforwards |
|
$ 4,700,000
|
|
|
| Operating loss carryforwards expiration period |
|
2024
|
|
|