Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Employee Stock Option	6 Months Ended
	Jun. 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	306,287
Number of options exercised (in shares) | shares	0
Number of options forfeited (in shares) | shares	(18,260)
Number of options expired (in shares) | shares	(203,534)
Number of options outstanding, balance ending (in shares) | shares	601,313
Number of options exercisable (in shares) | shares	214,952
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	4.10
Exercised, exercise price (in dollars per share) | $ / shares	0
Forfeited, exercise price (in dollars per share) | $ / shares	15.60
Expired, exercise price (in dollars per share) | $ / shares	30.28
Shares outstanding exercise price, balance ending (in dollars per share) | $ / shares	20.07
Exercisable, exercise price (in dollars per share) | $ / shares	$ 44.23