Employee Benefit Plans (Schedule Of Stock Options Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Benefit Plans [Abstract]
Options outstanding at beginning of year, Shares	432,918	501,318	521,654
Exercised, Shares	(181,670)	(68,400)	(20,336)
Terminated, Shares	(58,448)
Options outstanding at end of year, Shares	192,800	432,918	501,318
Options exercisable end of year, Shares	192,800	432,918	501,318
Options outstanding at beginning of year, Weighted Average Exercise Price	$ 10.78	$ 10.74	$ 10.66
Exercised, Weighted Average Exercise Price	$ 10.92	$ 10.52	$ 8.67
Terminated, Weighted Average Exercise Price	$ 11.20
Options outstanding at end of year, Weighted Average Exercise Price	$ 10.52	$ 10.78	$ 10.74
Options exercisable end of year, Weighted Average Exercise Price	$ 10.52	$ 10.78	$ 10.74