Loans, Trouble Debt Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Contract	Mar. 31, 2012 Contract
Interest Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	1	0
Pre-modification Outstanding Recorded Investment	$ 72	$ 0
Post-Modification Outstanding Recorded Investment	72	0
Term Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	4	2
Pre-modification Outstanding Recorded Investment	2,895	98
Post-Modification Outstanding Recorded Investment	2,895	98
Real Estate Loans [Member]
Recidivism receivables [Abstract]
Total recidivism, Number of contracts	0	1
Total recidivism, Recorded investment	0	48
Real Estate Loans [Member] | Residential [Member] | Interest Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	1
Pre-modification Outstanding Recorded Investment	72
Post-Modification Outstanding Recorded Investment	72
Real Estate Loans [Member] | Residential [Member] | Term Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	0
Pre-modification Outstanding Recorded Investment	0
Post-Modification Outstanding Recorded Investment	0
Real Estate Loans [Member] | Commercial [Member]
Recidivism receivables [Abstract]
Total recidivism, Number of contracts	0	1
Total recidivism, Recorded investment	0	48
Real Estate Loans [Member] | Commercial [Member] | Interest Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	0	0
Pre-modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Real Estate Loans [Member] | Commercial [Member] | Term Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	2	2
Pre-modification Outstanding Recorded Investment	1,365	98
Post-Modification Outstanding Recorded Investment	1,365	98
Other Commercial Loans [Member] | Interest Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	0
Pre-modification Outstanding Recorded Investment	0
Post-Modification Outstanding Recorded Investment	0
Other Commercial Loans [Member] | Term Modification [Member]
Financing receivable modifications [Abstract]
Number of contracts	2
Pre-modification Outstanding Recorded Investment	1,530
Post-Modification Outstanding Recorded Investment	$ 1,530