Stock-Based Compensation - Non-Vested Stock Options (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range
Exercisable shares	9,822
Less: Vested shares	9,822
Less: Forfeited shares	0
Exercised Options, Weighted Average Exercise Price	$ 0.00
Exercised Options, Intrinsic Value	$ 0.00
Granted shares	99,181
Outstanding shares	207,069
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding (Weight-Average Exercise)	$ 18.69
Outstanding Options, weighted average remaining contractual term	9 years 3 months	0 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	9 years 3 months
Outstanding Options, Intrinsic Value	$ 0.00	$ 0.00
Exercisable Options, weighted average remaining contractual term	9 years
Vested Options, weighted average remaining contractual term	$ 0.00
Granted (Weighted-Average Exercise)	$ 16.25
Granted Options, Intrinsic Value	0.00
Less: Forfeited (Weighted-Average Exercise)	0.00
Less: Vested (Weighted-Average Exercise)	20.44
Exercisable (Weighted-Average Exercise)	$ 20.44
Exercisable Options, Intrinsic Value	$ 0.00