Loans (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Abstract]
Risk rate loans, aggregate balance threshold	$ 2,500,000
Risk rate loans, loan balance threshold	500,000
Troubled debt restructurings included in impaired loans	28,900,000	$ 28,600,000
Current Troubled debt restructurings included in impaired loans	$ 28,200,000	$ 28,100,000
Number of days past due to be considered in default	30 days