Other Borrowings (Repurchase Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt	$ 389,025		$ 372,820
Wholesale repurchase agreements
Debt Instrument [Line Items]
Long-term debt	85,000		85,000
JP Morgan Chase | Wholesale repurchase agreements
Debt Instrument [Line Items]
Long-term debt	25,000
Interest rate	2.48%	[1]
Citigroup Global Markets | Wholesale repurchase agreements | Repurchase agreement, maturity date April 17, 2015
Debt Instrument [Line Items]
Long-term debt	15,000
Interest rate	3.32%	[1]
Citigroup Global Markets | Wholesale repurchase agreements | Repurchase agreement, maturity date April 17, 2018
Debt Instrument [Line Items]
Long-term debt	20,000
Interest rate	3.61%	[1],[2]
Interest rate cap	3.61%
Citigroup Global Markets | Wholesale repurchase agreements | Repurchase agreement, maturity date January 23, 2014
Debt Instrument [Line Items]
Long-term debt	15,000
Interest rate	2.69%	[1]
Barclays Capital | Wholesale repurchase agreements
Debt Instrument [Line Items]
Long-term debt	$ 10,000
Interest rate	4.07%	[1]

[1] Interest rates are fixed with the exception of the interest rate on the $20.0 million transaction with Citigroup Global Markets.

[2] Interest rate resets quarterly on the 17th of January, April, July and October of each year until maturity. Embedded within the contract is a cap interest rate of