Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation [Abstract]

Summary Of Stock Option Activity

	Year Ended December 31,
	2012			2011			2010
		Weighted			Weighted			Weighted
		Average			Average			Average
		Exercise			Exercise			Exercise
	Shares	Price		Shares	Price		Shares	Price
Outstanding at beginning of year	198,900	$	8.95	247,300	$	8.83	451,545	$	9.29
Exercised	(198,900)		8.95	(48,400)		8.34	(204,245)		9.85
Outstanding at end of year	-	$	-	198,900	$	8.95	247,300	$	8.83
Exercisable at end of year	-	$	-	198,900	$	8.95	247,300	$	8.83

Restricted Stock Unit Activity

	Year Ended December 31,
	2012			2011			2010
		Weighted			Weighted			Weighted
		Average			Average			Average
		Fair Value			Fair Value			Fair Value
		at Date of			at Date of			at Date of
	Units	Grant		Units	Grant		Units	Grant
Outstanding at beginning of year	710,591	$	29.53	596,648	$	25.78	546,876	$	22.77
Units granted	178,144		43.36	200,819		40.15	162,552		35.70
Shares issued	(108,170)		29.74	(82,982)		28.10	(85,676)		25.26
Units forfeited	(8,243)		41.22	(3,894)		34.44	(27,104)		26.25
Outstanding at end of year	772,322	$	32.57	710,591	$	29.53	596,648	$	25.78
Units vested at end of year	303,781	$	24.85	244,897	$	24.03	222,529	$	23.20