Stock-Based Compensation Plan (Tables)

3 Months Ended

Mar. 31, 2016

Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock Option Activities

	Three Months Ended March 31,
	2016			2015
		Weighted			Weighted
		Average			Average
	Number of	Exercise		Number of	Exercise
	Shares	Price		Shares	Price
Options outstanding at January 1	1,189,255	$	18.08	1,420,749	$	15.67
Options exercised - employees	-	$	-	(354,244)		12.35
Options outstanding at March 31	1,189,255	$	18.08	1,066,505	$	16.78
Options exercisable	917,729	$	16.92	835,276	$	15.31
Weighted average remaining term	4.7 years			5.1 years

Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock Option Activities

	Number of	Weighted
	Shares of	Average
	Restricted	Grant Date
	Stock	Fair Value
Restricted stock outstanding, December 31, 2015	48,025	$	22.70
Restricted stock vested	(2,511)	$	23.04
Restricted stock outstanding, March 31, 2016	45,514	$	22.68