Loans Receivable and Allowance for Loan and Lease Losses (Details 9) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Activity related to the FDIC loss sharing receivable
Balance, beginning of period	$ 14,149	$ 16,229	$ 13,077	$ 16,702
Change in FDIC loss sharing receivable	(449)	800	741	1,709
Reimbursement from the FDIC	(1,324)	(4,395)	(1,442)	(5,777)
Balance, end of period	$ 12,376	$ 12,634	$ 12,376	$ 12,634