Loans Held For Sale (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Servicing Assets at Fair Value [Line Items]
Residential loans held for sale, at fair value	$ 4,366,000	$ 6,104,000	$ 4,366,000	$ 6,104,000	$ 4,528,000
Proceeds from sale of loans			2,242,000	4,743,000
Recoveries	3,626,000	3,135,000	7,054,000	6,537,000
Commercial And Commercial Real Estate [Member]
Servicing Assets at Fair Value [Line Items]
Proceeds from sale of loans			2,200,000	4,900,000
Commercial and commercial real estate loans held for investment	1,600,000	4,700,000	1,600,000	4,700,000
Purchased impaired loans	1,500,000	100,000	1,500,000	100,000
Charge-offs			100,000
Recoveries			700,000
Income recognized on sale of loans				$ 200,000