Stock-Based Compensation - Vested Options (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted non-vested options (shares)	298,000	157,000
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted non-vested options (shares)	12,552	280
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted non-vested options (shares)	309,389	181,905