Stock-Based Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2015

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

Summary Of Fair Value Weighted Average Assumptions

	2015			2014			2013
Stock price	$	21.72		$	22.09		$	26.41
Exercise price	$	21.72		$	22.09		$	26.41
Expected term:
Employees		6.25 years			6.25 years			6.25 years
Directors		5.5 years			5.5 years			5.5 years
Expected volatility:
Employees		41.76	%		53.50	%		56.70	%
Directors		39.50	%		44.80	%		58.60	%
Dividend yield		-	%		-	%		-	%
Risk free rate:
Employees		2.00	%		1.98	%		1.35	%
Directors		1.85	%		1.79	%		1.16	%

Stock Options [Member]

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

Summary Of Stock Option Activities

				Weighted
				Average
		Weighted		Remaining		Aggregate
		Average		Contractual		Intrinsic
	Number of	Exercise		Term		Value
	Shares	Price		(in years)		(in thousands)
Options outstanding, December 31, 2012	1,335,680	$	13.41
Options granted - employees	51,300	$	26.41
Options granted - directors	40,000	$	26.41
Options forfeited - employees	(3,501)	$	14.87
Options exercised - employees	(159,994)	$	9.53
Options outstanding, December 31, 2013	1,263,485	$	14.84
Options granted - employees	120,000	$	22.09
Options granted - directors	50,000	$	22.09
Options forfeited - employees	(5,417)	$	22.55
Options exercised - employees	(7,319)	$	15.60
Options outstanding, December 31, 2014	1,420,749	$	15.67
Options granted - employees	133,000	$	21.66
Options granted - directors	50,000	$	21.89
Options exercised - employees	(414,494)	$	11.45
Options outstanding, December 31, 2015	1,189,255	$	18.08		5.9	$	1,022
Options exercisable at December 31, 2015	901,268	$	16.84		4.9	$	1,022
Expected to vest after December 31, 2015	287,987	$	21.95		8.9	$	-

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, 2012	-	$	-
Restricted stock granted	28,150	$	26.11
Restricted stock outstanding, December 31, 2013	28,150	$	26.11
Restricted stock granted	23,500	$	22.09
Restricted stock vested	(7,648)	$	26.13
Restricted stock forfeited	(1,500)	$	26.41
Restricted stock outstanding, December 31, 2014	42,502	$	23.87
Restricted stock granted	21,000	$	21.15
Restricted stock vested	(15,477)	$	23.81
Restricted stock outstanding, December 31, 2014	48,025	$	22.70