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Significant Accounting Policies (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Sep. 16, 2015
Significant Accounting Policies [Line Items]      
Offering Costs $ 28,290,000    
Underwriter Discounts 27,500,000    
Deferred Offering Costs 19,500,000    
Public Offering Fee 790,000    
Accrued Liabilities, Current 0 $ 100,000  
Net Tangible Assets Benchmark Value $ 5,000,001    
Common Class A [Member]      
Significant Accounting Policies [Line Items]      
Common Stock Outstanding Including Temporary Equity 50,000,000 50,000,000  
Temporary Equity, Shares Outstanding 47,702,674 47,646,408
Redeemable Ordinary Shares [Member]      
Significant Accounting Policies [Line Items]      
Net Tangible Assets Benchmark Value $ 5,000,001    
Credit Concentration Risk [Member]      
Significant Accounting Policies [Line Items]      
Cash, FDIC Insured Amount $ 250,000