Acquisition - Summary of Acquired Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Interest component of expected cash flows (accretable difference)	$ (144)		$ 0
Valley Green Bank [Member]
Business Acquisition [Line Items]
Contractually required principal and interest payments		$ 7,377
Contractual cash flows not expected to be collected (nonaccretable difference)		(5,344)
Cash flows expected to be collected		2,033
Interest component of expected cash flows (accretable difference)		(305)
Fair value of loans acquired with a deterioration of credit quality		$ 1,728