Commitments, Contingencies, and Concentrations of Credit Risk (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Outstanding closed-end loan commitments	$ 324
Unfunded commitments on revolving lines of credit, credit cards and home equity loans	217
Commitments, total	541
Fixed Rate
Outstanding closed-end loan commitments	66
Unfunded commitments on revolving lines of credit, credit cards and home equity loans	33
Commitments, total	99
Variable Rate
Outstanding closed-end loan commitments	258
Unfunded commitments on revolving lines of credit, credit cards and home equity loans	184
Commitments, total	$ 442