Commitments & Contingencies (Details Textual) - USD ($)  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Aug. 01, 2017  | 
Jun. 30, 2018  | 
Jun. 30, 2017  | 
Jun. 30, 2018  | 
|
| Payments of Stock Issuance Costs | $ 144,108 | $ 0 | ||
| Deferred Offering Costs | $ 13,300,000 | $ 13,300,000 | 13,300,000 | |
| Proceeds from Reimbursement Receivable | 1,275,067 | |||
| Over-Allotment Option [Member] | ||||
| Stock Issued During Period, Shares, New Issues | 3,000,000 | |||
| Underwriting Discount Per Unit | $ 0.20 | |||
| Payments of Stock Issuance Costs | $ 4,600,000 | |||
| Deferred Offering Cost Per Unit | $ 0.35 | |||
| Deferred Offering Costs | $ 8,050,000 | $ 8,050,000 | $ 8,050,000 | |
| X | ||||||||||
- Definition The per unit deferred offering cost payable. No definition available. 
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| X | ||||||||||
- Definition Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants. No definition available. 
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| X | ||||||||||
- Definition The per unit underwriting discount the underwriter entitled. No definition available. 
  | 
| X | ||||||||||
- Definition Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Details 
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