Stock-Based Compensation - Summary of Option Activity (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares
Number of Options
Number of options outstanding, beginning balance (in shares) | shares	49,410
Number of options granted (in shares) | shares	150,000
Number of options exercised (in shares) | shares	0
Number of options forfeited (in shares) | shares	(34,420)
Number of options expired (in shares) | shares	(10)
Number of options outstanding, ending balance (in shares) | shares	164,980
Number of options vested or expected to vest (in shares) | shares	164,980
Number of options exercisable (in shares) | shares	13,086
Weighted Average Exercise Price
Weighted average exercise price of options outstanding, beginning of period (in usd per share) | $ / shares	$ 40.84
Weighted average exercise price of options granted (in usd per share) | $ / shares	4.58
Weighted average exercise price of options exercised (in usd per share) | $ / shares	0
Weighted average exercise price of options forfeited (in usd per share) | $ / shares	38.69
Weighted average exercise price of options expired (in usd per share) | $ / shares	19,713.00
Weighted average exercise price of options outstanding, end of period (in usd per share) | $ / shares	7.16
Weighted average exercise price of options vested or expected to vest (in usd per share) | $ / shares	7.16
Weighted average exercise price of options exercisable (in usd per share) | $ / shares	$ 34.54
Weighted Average Remaining Contractual Life (in years) and Aggregate Intrinsic Value
Weighted average remaining contractual life of options outstanding (in years)	9 years 3 months 18 days
Weighted average remaining contractual life of options vested or expected to vest (in years)	9 years 3 months 18 days
Weighted average remaining contractual life of options exercisable (in years)	2 years
Aggregate intrinsic value of options outstanding | $	$ 0
Aggregate intrinsic value of options vested and expected to vest | $	0
Aggregate intrinsic value of options exercisable | $	$ 0