Stock-Based Compensation - Non-Vested Stock Options (Details)	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range
Exercisable shares | shares	0
Less: Vested shares | shares	0
Less: Forfeited shares | shares	0
Granted shares | shares	99,181
Outstanding shares | 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
Granted (Weighted-Average Grant Date)	5.96
Granted (Weighted-Average Exercise)	16.25
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