Reverse Merger - Summary of Regado Purchase Price (Detail) - Regado [Member] $ in Thousands	May. 04, 2015 USD ($)
Business Acquisition [Line Items]
Total purchase price	$ 46,123
Common Stock [Member]
Business Acquisition [Line Items]
Total purchase price	40,667
Series F Convertible Preferred Stock [Member]
Business Acquisition [Line Items]
Total purchase price	2,420
Vested Stock Option [Member]
Business Acquisition [Line Items]
Total purchase price	$ 3,036