Derivatives - Narrative (Details)	9 Months Ended
	Sep. 30, 2015 USD ($) derivative_swap	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Derivatives, Fair Value [Line Items]
Collateral requirement threshold	$ 250,000
Collateral posted	262,000		$ 0
Derivative notional amount	21,900,000		23,600,000
Derivative fee income	0	$ 0
Variable to Fixed
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 11,000,000
Number of derivatives | derivative_swap	2
Fixed to Variable
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 11,000,000
Number of derivatives | derivative_swap	2
Residential Mortgage Holding Company
Derivatives, Fair Value [Line Items]
Unfunded Lending Commitment	$ 74,600,000		$ 39,600,000