Stock-Based Compensation - Changes in Nonvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Stock Options
Beginning balance (in shares) | shares	349,871
Granted (in shares) | shares	8,000
Vested (in shares) | shares	(145,582)
Forfeited (in shares) | shares	(20,612)
Ending balance (in shares) | shares	191,677
Weighted- Average Grant Date Fair Value
Beginning balance, (in dollars per share) | $ / shares	$ 14.33
Granted, (in dollars per share) | $ / shares	16.48
Vested, (in dollars per share) | $ / shares	13.81
Forfeited, (in dollars per share) | $ / shares	15.04
Ending balance, (in dollars per share) | $ / shares	$ 14.73