Description of Business and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012 item
Description of Business and Summary of Significant Accounting Policies
Percentage of capital stock of the Bank held	100.00%
Number of depository branches	13
Cash and Cash Equivalents
Cash reserves required by the Board of Governors of the Federal Reserve for depository institutions (in dollars)	$ 38.3
Securities
Number of investment securities classified as held to maturity	0	0
Number of investment securities classified as held for trading	0	0
Income Taxes
Valuation allowance deferred tax asset	$ 0
Buildings
Premises, furniture and equipment
Estimated useful life	40 years
Furniture, fixtures and equipment
Premises, furniture and equipment
Estimated useful life	7 years
Computer and telecommunication
Premises, furniture and equipment
Estimated useful life	3 years