Loans - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Accruing loans past due 90 days or more decreased	$ 120,000
Accruing loans past due 90 days or more percentage of total loans (in hundredths)	0.02%	0.02%
Average 90 days or more past due loan balance	$ 90,000	$ 70,000
TDR loans default payment	0
Impaired loans decrease	4,610,000
Decrease in TDR loans	$ 6,060,000
Prior period within which impairment is being measured	1 year
Number of period within which average appraisals obtained	1 month