Changes in Noncovered Other Real Estate Owned (Summary of Noncovered Other Real Estate Owned) (Details) (USD $) In Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2010
Writedowns Previously Recorded On Transfer In Of Real Estate Acquired Through Foreclosure	$ 18	$ 108
Proceeds from sale of OREO property		7,874	3,190
Net realized gain on sale of other real estate owned		(5,455)	(1,644)
Noncovered OREO [Member]
Balance, beginning of period	26,081	30,991
Transfers in, net of write-downs ($18 and $108, respectively)	1,106	3,148
OREO improvements	217	468
Additional OREO write-downs	(2,536)	(4,446)
Proceeds from sale of OREO property	(2,502)	(7,874)
Net realized gain on sale of other real estate owned	373	452
Balance, end of period	$ 22,739	$ 22,739