Derivatives - Schedule of Offsetting Asset Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Interest rate swaps
Offsetting Assets [Line Items]
Gross amounts of recognized assets and liabilities	$ 784	$ 261
Not Designated as Hedging Instrument
Offsetting Assets [Line Items]
Gross amounts of recognized assets and liabilities	1,456	950
Not Designated as Hedging Instrument | Interest rate swaps
Offsetting Assets [Line Items]
Gross amounts of recognized assets and liabilities	133	77
Gross amounts offset in the Statement of Financial Position	0	0
Net amounts of assets and liabilities presented in the Statement of Financial Position	133	77
Gross amounts not offset in the Statement of Financial Position, Financial Instruments	0	0
Gross amounts not offset in the Statement of Financial Position, Collateral Posted	0	0
Gross amounts not offset in the Statement of Financial Position, Net Amount	$ 133	$ 77