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Loans and Allowance for Loan Losses (Details 9) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Loans and Leases Receivable, Related Parties [Roll Forward]
Aggregate amount at beginning of year	$ 15,723	$ 20,126	$ 22,005
New loans	2,458	6,115	3,504
Repayments	(2,552)	(7,171)	(4,808)
Changes in directors and their affiliations	0	(3,347)	(575)
Aggregate amount at end of year	$ 15,629	$ 15,723	$ 20,126

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

Reflects the amount of collections received from related parties to reduce the carrying amounts of loans and leases receivable due from them.