Loans Receivable and Allowance for Loan Losses (Details 9) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Activity related to the FDIC loss sharing receivable
Balance, beginning of period	$ 12,376	$ 12,634	$ 13,077	$ 16,702
Change in FDIC loss sharing receivable	3,796	0	4,537	1,709
Reimbursement from the FDIC	(3,866)	(774)	(5,308)	(6,551)
Balance, end of period	$ 12,306	$ 11,860	$ 12,306	$ 11,860