Stock-Based Compensation - Changes in Nonvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Number of Stock Options
Beginning balance (in shares) | shares	292,013
Granted (in shares) | shares	189,170
Vested (shares) | shares	(109,285)
Forfeited (shares) | shares	(22,027)
Ending balance (in shares) | shares	349,871
Weighted- Average Grant Date Fair Value
Beginning balance, (in dollars per share) | $ / shares	$ 12.20
Granted, (in dollars per share) | $ / shares	15.95
Vested, (in dollars per share) | $ / shares	11.95
Forfeited, (in dollars per share) | $ / shares	10.24
Ending balance, (in dollars per share) | $ / shares	$ 14.33