Earnings Per Share - Schedule of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income (Numerator) [Abstract]
Net income as reported	$ 5,506	$ 4,637
Basic EPS: Income available to common shareholders	5,506	4,637
Diluted EPS: Income available to common shareholders plus assumed conversions	$ 5,506	$ 4,637
Shares (Denominator) [Abstract]
Basic EPS: Income available to common shareholders (in shares)	10,771,271	10,734,281
Effect of dilutive securities: restricted stock (in shares)	73,228	73,623
Diluted EPS: Income available to common shareholders plus assumed conversions (in shares)	10,844,499	10,807,904
Per-Share Amount [Abstract]
Basic EPS: Income available to common shareholders (in dollars per share)	$ 0.51	$ 0.43
Diluted EPS: Income available to common shareholders plus assumed conversions (in dollars per share)	$ 0.51	$ 0.43