Common Stock (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 26, 2020	Aug. 25, 2020	May 14, 2019	May 13, 2019	Jun. 25, 2014	May 06, 2014
Class of Stock [Line Items]
Common stock, shares authorized	20,000,000	20,000,000		200,000	100,000	20,000,000	10,000,000
Employee [Member]
Class of Stock [Line Items]
Restricted shares, vesting period	4 years
Director [Member]
Class of Stock [Line Items]
Restricted shares, vesting period	12 months
Dividend Reinvestment Plan [Member]
Class of Stock [Line Items]
Shares authorized per plan	330,750
2014 Restricted Stock Plan [Member]
Class of Stock [Line Items]
Shares authorized per plan								200,000	100,000
Shares granted, net	85,914	57,655
Shares forfeited and available for reissuance	2,446	2,346
Shares granted	28,259	18,450	12,250
Shares forfeited	100	0	1,876
Unrecognized compensation cost related to all non-vested share-based compensation awards	$ 726,000	$ 630,000
Weighted average recognition period	2 years 7 months 6 days	2 years 10 months 24 days
2014 Restricted Stock Plan [Member] | Employee [Member]
Class of Stock [Line Items]
Shares granted	19,759	11,650	7,450
2014 Restricted Stock Plan [Member] | Director [Member]
Class of Stock [Line Items]
Shares granted	8,500	6,800	4,800
Treasury Stock Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount	$ 15,000,000
Percentage of issued shares based on closing stock price	8.00%
Stock repurchase program expiration date	Mar. 19, 2020
Stock repurchased during period, shares	92,652
Stock repurchased at average price per share	$ 19.37