Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Employee Stock Option	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Number of Options
Number of options outstanding, balance beginning (in shares) | shares	516,820
Number of options issued (in shares) | shares	348,612
Number of options exercised (in shares) | shares	0
Number of options forfeited (in shares) | shares	(40,911)
Number of options expired (in shares) | shares	(229,309)
Number of options outstanding, balance ending (in shares) | shares	595,212
Number of options exercisable (in shares) | shares	201,851
Weighted Average Exercise Price
Shares outstanding exercise price, balance beginning (in dollars per share) | $ / shares	$ 33.40
Issued, exercise price (in dollars per share) | $ / shares	3.87
Exercised, exercise price (in dollars per share) | $ / shares	0
Forfeited, exercise price (in dollars per share) | $ / shares	10.19
Expired, exercise price (in dollars per share) | $ / shares	33.23
Shares outstanding exercise price, balance ending (in dollars per share) | $ / shares	17.76
Exercisable, exercise price (in dollars per share) | $ / shares	$ 40.54