Fair Value Measurements (Loss) Gain On Assets and Liabilities Measured On A Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Instrument [Line Items]
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis	$ (1)	$ 2	$ (2)
Mortgage Loans Held for Sale [Member]
Financial Instrument [Line Items]
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis	(1)	3	(1)
Forward Sales or Mortgage Backed Securities [Member]
Financial Instrument [Line Items]
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis	1	(1)	(1)
Interest Rate Lock Commitments [Member]
Financial Instrument [Line Items]
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis	0	0	0
Best Efforts Contracts [Member]
Financial Instrument [Line Items]
(Loss) Gain On Assets and Liabilities Measured On A Recurring Basis	$ 0	$ 0	$ 0