Summary of Significant Accounting Policies - Premises and Equipment (Details)
|
12 Months Ended |
---|---|
Dec. 31, 2012
|
|
Buildings and improvements | Minimum
|
|
Property, Plant and Equipment | |
Estimated useful lives | 5 years |
Buildings and improvements | Maximum
|
|
Property, Plant and Equipment | |
Estimated useful lives | 45 years |
Furniture and equipment | Minimum
|
|
Property, Plant and Equipment | |
Estimated useful lives | 4 years |
Furniture and equipment | Maximum
|
|
Property, Plant and Equipment | |
Estimated useful lives | 15 years |