Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Jun. 23, 2017
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]      
Underwriting commitments, description The Company granted the underwriters a 45-day option to purchase up to 1,500,000 additional Units to cover over-allotments at the Initial Public Offering price, less the underwriting discounts and commissions. On June 23, 2017, the underwriters elected to exercise their over-allotment option to purchase 1,500,000 Units at a purchase price of $10.00 per Unit.    
Deferred underwriting fees $ 4,025,000  
Underwriting discount $ 2,875,000    
Purchased an aggregate, shares 125,000    
Purchased an aggregate, per unit $ 10.00 $ 10.10  
Pecuniary interest, shares 230,000