Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 72	$ 149
Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative assets	161	71
Derivative liabilities	34	71
Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Derivative assets	1,508	1,137
Retail interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative liabilities		78
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative assets	1,542	1,208
Derivative liabilities	72	149
Not Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative assets	34	71
Derivative liabilities	34	71
Not Designated as Hedging Instrument | Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Derivative assets	34	71
Not Designated as Hedging Instrument | Interest rate swaps | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	34	71
Not Designated as Hedging Instrument | Interest rate lock commitments | Other assets
Derivatives, Fair Value [Line Items]
Derivative assets	1,508	1,137
Not Designated as Hedging Instrument | Retail interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative liabilities	38	78
Not Designated as Hedging Instrument | Retail interest rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 38	$ 78