Fair Value Measurements Balance Sheet Location of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	$ 254	$ 0
Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	3	1
Forward Sales or Mortgage Backed Securities [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	253	0
Forward Sales or Mortgage Backed Securities [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	0	0
Interest Rate Lock Commitments [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	1	0
Interest Rate Lock Commitments [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	0	0
Best Efforts Contracts [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	0	0
Best Efforts Contracts [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	$ 3	$ 0