Outstanding Shares and Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 27, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic earnings per share [Abstract]
Net income		$ 12,161	$ 14,721	$ 12,551
Weighted average common shares outstanding (in shares)		13,462,764	13,414,705	13,382,484
Basic earnings per share (in dollars per share)		$ 0.90	$ 1.10	$ 0.94
Diluted earnings per share [Abstract]
Net income		$ 12,161	$ 14,721	$ 12,551
Weighted average common shares outstanding (in shares)		13,462,764	13,414,705	13,382,484
Effect of dilutive shares (in shares)		120,080	164,978	185,103
Adjusted weighted average common shares outstanding (in shares)		13,582,844	13,579,683	13,567,587
Diluted earnings per share (in dollars per share)		$ 0.90	$ 1.08	$ 0.93
Subsequent Event [Member]
Dividends [Abstract]
Stock dividend percentage	5.00%
Dividends, date declared	Jan. 27, 2021
Dividends, date to be paid	Mar. 25, 2021
Dividends payable, date of record	Feb. 26, 2021
Subsequent Event [Member] | Dividend Declared in 2021 Annual [Member]
Dividends [Abstract]
Stock dividend percentage	5.00%
Dividends, date declared	Jan. 27, 2021
Dividends, date to be paid	Mar. 25, 2021
Dividends payable, date of record	Feb. 26, 2021
Stock Options [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from EPS computation (in shares)		424,476	237,495	95,109
Restricted Stock [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from EPS computation (in shares)		43,859	0	0