Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Earnings Per Share

Earnings per share have been computed based on the following:

	Years ended December 31,
	2017		2016		2015
Net income (in thousands)	$	40,554	$	44,811	$	43,818
(number of shares in thousands)
Average number of common shares outstanding		22,912		22,814		22,750
Effect of dilutive stock options		338		273		248
Average number of common shares outstanding used to calculate diluted earnings per share		23,250		23,087		22,998