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Reverse Merger - Summary of Purchase Price Allocation for Assets Acquired and Liabilities Assumed (Detail) - Regado [Member] - USD ($)
$ in Thousands
Dec. 31, 2015
May. 04, 2015
Business Acquisition [Line Items]    
Cash, cash equivalents and restricted cash   $ 33,232
Prepaid expenses and other assets acquired   1,408
Goodwill   5,110
Deferred tax liability $ 0 (4,393)
Other liabilities   (1,439)
Total   46,123
In Process Research and Development [Member]    
Business Acquisition [Line Items]    
In-process research and development   $ 12,205