Earnings Per Share (Calculation of Basic and Diluted Earnings Per Share - Current Period) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ 4,110	$ 3,467
Net income allocated to participating securities	47
Net income allocated to common shareholders	$ 4,063
Weighted average common shares outstanding—basic (in shares)	7,637,000	7,751,750
Effect of dilutive securities:
Weighted average common stock equivalents (in shares)		117,431
Weighted average common shares outstanding—diluted (in shares)	7,738,000	7,869,181
EPS available to common shareholders
Basic earnings per common share (in dollars per share)	$ 0.53	$ 0.45
Diluted earnings per common share (in dollars per share)	$ 0.53	$ 0.44
Earnings per share calculation under two-class method
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average common shares - issued (in shares)	7,726,000
Average unvested restricted share awards (in shares)	(89,000)
Weighted average common shares outstanding—basic (in shares)	7,637,000
Effect of dilutive securities:
Weighted average common stock equivalents (in shares)	101,000
Weighted average common shares outstanding—diluted (in shares)	7,738,000