Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Calculation of Earnings Per Common Share

The following table presents the calculation of earnings per common share:

(Dollars and shares in thousands, except per share amounts)
Years ended December 31,	2017			2016			2015
Earnings per common share - basic:
Net income		$45,925			$46,481			$43,465
Less dividends and undistributed earnings allocated to participating securities	(108		)	(97		)	(126		)
Net income applicable to common shareholders	45,817			46,384			43,339
Weighted average common shares	17,207			17,081			16,879
Earnings per common share - basic		$2.66			$2.72			$2.57
Earnings per common share - diluted:
Net income		$45,925			$46,481			$43,465
Less dividends and undistributed earnings allocated to participating securities	(108		)	(97		)	(126		)
Net income applicable to common shareholders	45,817			46,384			43,339
Weighted average common shares	17,207			17,081			16,879
Dilutive effect of common stock equivalents	131			127			188
Weighted average diluted common shares	17,338			17,208			17,067
Earnings per common share - diluted		$2.64			$2.70			$2.54