Deferred Compensation Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2006 item
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation agreements with former directors | item	1
Deferred compensation agreements with current directors | item	1
Benefit payment period, in years	10 years
Age at which benefit payments begin	65 years
Obligation under deferred compensation agreements	$ 600
Expense associated with agreements	2	$ 2	$ 76
Fulton Bancshares Corporation [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Obligation under deferred compensation agreements	386
Number of Agreements | item				2
Expected future deferred compensation expenses	$ 0