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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
3 Months Ended
Apr. 21, 2017
Mar. 31, 2017
Dec. 31, 2016
Accounting Policy [Line Items]      
Dilutive securities   0  
Deferred offering costs   $ 602,312 $ 38,234
Unrecognized tax benefits   0  
Accrued payment of interest and penalties   0  
Subsequent Event [Member] | Kayne Anderson Sponsor, LLC [Member]      
Accounting Policy [Line Items]      
Founder shares forfeited by sponsor 629,472    
Maximum [Member]      
Accounting Policy [Line Items]      
Federal Depository Insurance Coverage amount   $ 250,000