Borrowed Funds (Subordinated Debentures) (Narrative) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Dec. 31, 2009 USD ($) loan party	Dec. 31, 2008 USD ($)	Dec. 31, 2014 USD ($)	[1]	Sep. 30, 2014 USD ($)
Debt Instrument [Line Items]
Subordinated debt	$ 0	$ 6,800,000	$ 10,000,000	$ 16,800,000		$ 16,800,000
Tier 2 capital, term	5 years
Tier 2 capital decrease each year until maturity	20.00%
Number of unrelated parties | party		2
Subordinated Debt, Number of Issuances | loan		3
Interest rate		10.00%
Term of subordinated borrowing		10 years	7 years 6 months
Number of years subordinated borrowing is not pre-payable		5 years
Basis spread on variable rate	0.50%		2.75%
Prepaid subordinated debentures	$ 16,800,000
Director [Member]
Debt Instrument [Line Items]
Subordinated debt		$ 5,000,000
Unrelated Party One [Member]
Debt Instrument [Line Items]
Subordinated debt		1,000,000
Unrelated Party Two [Member]
Debt Instrument [Line Items]
Subordinated debt		$ 800,000

[1] December 31, 2014 financial information has been extracted from audited consolidated financial statements