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Common Stock and Earnings Per Share (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Nov. 08, 2019	Mar. 11, 2013
Common Stock and Earnings Per Share [Abstract]
Net income	$ 16,984	$ 16,598
Shares Used in Computing Basic and Diluted Earnings per Share [Abstract]
Weighted average common shares, basic (in shares)	13,076,263	13,033,681
Effect of dilutive securities [Abstract]
Employee stock-based compensation (in shares)	1,027	839
Weighted average common shares, diluted (in shares)	13,077,290	13,034,520
Stock Repurchase Program [Abstract]
Number of shares authorized to be repurchased under the stock repurchase program (in shares)				1,200,000
Number of shares repurchased and retired under the stock repurchase program (in shares)	0	0
Number of remaining shares authorized to be repurchased under the stock repurchase program (in shares)	618,004
Employee Stock Purchase Plan [Member]
Common Stock [Abstract]
Minimum period full-time employees must be employed to purchase shares	90 days
Maximum percentage of gross compensation allowed to purchase shares	10.00%
Purchase price as a percentage of fair market value of common stock	95.00%
Number of shares issued (in shares)	3,986	3,718
Number of authorized shares remaining to be issued (in shares)	54,021
Dividend Reinvestment and Direct Stock Purchase and Sale Plan [Member]
Common Stock [Abstract]
Number of shares authorized to be issued (in shares)			157,000
Number of shares authorized, unissued, and rolled over under plan (in shares)			344,379
Number of shares issued (in shares)	41,975	37,370
Number of authorized shares remaining to be issued (in shares)	396,544
Optional Dividend Reinvestment Portion of Plan [Member]
Common Stock [Abstract]
Purchase price as a percentage of fair market value of common stock	95.00%
Direct Stock Purchase Portion of Plan [Member]
Common Stock [Abstract]
Purchase price as a percentage of fair market value of common stock	100.00%

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