Borrowings (Long-Term Borrowings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Year End Balance	$ 503,710
Federal Home Loan Bank Advances [Member] | Subsidiary Bank [Member]
Maturity Date, End	Jan. 01, 2013
Year End Weighted Rate	4.70%
Year End Balance	1,510
Federal Home Loan Bank Advances Two [Member]
Maturity Date, Start	Jan. 01, 2014
Maturity Date, End	Dec. 31, 2017
Year End Weighted Rate	3.50%
Year End Balance	102,200
Structured Repurchase Agreements [Member] | Subsidiary Bank [Member]
Maturity Date, Start	Jan. 01, 2013
Maturity Date, End	Dec. 31, 2014
Year End Weighted Rate	0.00%
Year End Balance	$ 400,000