Cash and Due from Banks - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash and Due from Banks [Abstract]
Minimum average daily balance	$ 500,000
Compensating Balances [Line Items]
Required balance	$ 500,000
Maturity period of securities at acquisition	90 days
Domestic certificates of deposit	$ 0	$ 3,500,000
Federal Reserve Bank
Compensating Balances [Line Items]
Required balance	$ 0