Stock Plan (Tables)

12 Months Ended

Dec. 31, 2018

Stock Plan

Average assumptions used to value stock options

The average assumptions used to value each option award granted during the years ended December 31, 2012 and 2011 are as follows:

	Years ended December 31
	2012			2011
Weighted-average grant date fair value	$	3.21		$	2.53
Expected dividend yield		1.91	%		3.12	%
Expected volatility		28.01	%		28.74	%
Risk-free interest rate		1.94	%		2.02	%
Expected term (years)		10.00			10.00
Expected forfeiture		0.00	%		0.00	%