Merger with Macrocure and Related Transactions - Subscription Agreement (Details) - HCV IX - Subscription Agreement $ / shares in Units, $ in Thousands	Jan. 20, 2017 USD ($) $ / shares shares
Merger with Macrocure
Issuance of stock (in shares) | shares	1,010,225
Purchase price | $	$ 10,000
Price per share (in dollars per share) | $ / shares	$ 9.90