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Shareholders' Equity - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Net income	$ 21,289	$ 14,026	$ 15,182
Income available to common shareholders	$ 21,289	$ 14,026	$ 15,182
Weighted average shares outstanding	13,699,823	12,472,095	11,331,166
Net income per common share (in dollars per share)	$ 1.55	$ 1.12	$ 1.34
Effect of dilutive stock options and warrants	129,171	250,255	104,283
Weighted average shares of common stock and common stock equivalents	13,828,994	12,722,350	11,435,449
Net income per diluted common share (in dollars per share)	$ 1.54	$ 1.10	$ 1.33
Antidilutive options and warrants excluded from computation of earnings per share	0	0

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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