Derivatives - Narrative (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) derivative_swap	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Collateral requirement threshold	$ 250,000
Collateral posted	261,000		$ 216,000
Derivative notional amount	$ 20,700,000		21,300,000
Number of derivatives | derivative_swap	4
Derivative fee income	$ 0	$ 0
Variable to Fixed
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 10,400,000
Number of derivatives | derivative_swap	2
Fixed to Variable
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 10,400,000
Number of derivatives | derivative_swap	2
Residential Mortgage Holding Company
Derivatives, Fair Value [Line Items]
Unfunded Lending Commitment	$ 83,800,000		$ 71,300,000