Warrants - ALS Biopharma Warrants (Details) - ALS Biopharma Agreement - Common Shares	Aug. 10, 2015 $ / shares shares
Common stock warrants issued, immediately exercisable
ALS Biopharma Warrants
Shares that warrant can purchase | shares	275,000
Exercise price (in dollars per share) | $ / shares	$ 5.60
Exercise period from date of issuance	10 years
Common stock warrants issued, exercisable upon filing drug application
ALS Biopharma Warrants
Shares that warrant can purchase | shares	325,000
Exercise price (in dollars per share) | $ / shares	$ 5.60
Exercise period from date of issuance	10 years