Stock Awards - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of year (in shares)	412,800	377,950
Granted (in shares)	10,200	68,150
Exercised (in shares)	666	7,000
Forfeited (in shares)	1,334	26,300
Options outstanding, end of year (in shares)	421,000	412,800
Options exercisable, end of year (in shares)	359,413	298,467
Outstanding, beginning of year, average exercise price (in dollars per share)	$ 9.72	$ 9.80
Granted, average exercise price (in dollars per share)	11.95	9.99
Exercised, average exercise price (in dollars per share)	10.75	8.30
Forfeited, average exercise price (in dollars per share)	9.70	11.96
Options outstanding, end of year, average exercise price (in dollars per share)	9.79	9.72
Options exercisable, end of year, average exercise price (in dollars per share)	$ 9.62	$ 9.16