Subordinated Notes (Summary of Subordinate Notes) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Subordinated Borrowing [Line Items]
Subordinated notes	$ 15,000	$ 35,000
Subordinated Note, Due October 29 2012 [Member]
Subordinated Borrowing [Line Items]
Subordinated notes	0	5,000
Subordinated Note, Due May 1 2013 [Member]
Subordinated Borrowing [Line Items]
Subordinated notes	0	10,000
Subordinated Note, Due May 29 2015 [Member]
Subordinated Borrowing [Line Items]
Subordinated notes	$ 15,000	$ 20,000