Warrants - Narrative (Details) - Common Stock Warrants |
9 Months Ended |
---|---|
Sep. 30, 2017
$ / shares
shares
| |
Class of Warrant or Right [Line Items] | |
Warrants acquired in Merger (in shares) | shares | 13,534 |
Warrants acquired in Merger (in usd per share) | $ / shares | $ 80.70 |