Stock-Based Compensation - Non-Vested Stock Options (Details) - $ / shares	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable shares	0
Less: Vested shares	0
Less: Forfeited shares	0
Granted shares	29,464
Outstanding shares	29,464	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding (Weight-Average Exercise)	$ 20.44	$ 0.00
Granted (Weighted-Average Grant Date)	8.01
Granted (Weighted-Average Exercise)	20.44
Less: Forfeited (Weighted-Average Grant Date)	0.00
Less: Forfeited (Weighted-Average Exercise)	0.00
Less: Vested (Weighted-Average Grant Date)	0.00
Less: Vested (Weighted-Average Exercise)	0.00
Exercisable (Weighted-Average Exercise)	$ 0.00