Acquisitions Acquisitions (Narrative) (Details) - USD ($)			12 Months Ended
	Jan. 01, 2020	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net income			$ 31,866,000	$ 28,072,000	$ 11,915,000
Goodwill			12,658,000	15,272,000
Peoples Bankshares Inc [Member]
Business Acquisition [Line Items]
Percentage of ownership acquired		100.00%
Business Acquisition, Share Price, Number Of Shares		465,931
Value of assets acquired		$ 133,086,000		133,000,000
Value of liabilities acquired		113,486,000		113,000,000
Revenues, Net of Interest Expense				3,600,000
Net income				$ 21,000
Goodwill		2,100,000
Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Percentage of ownership acquired	100.00%
Business Acquisition, Share Price, Number Of Shares	570,000
Value of assets acquired			195,000,000
Value of liabilities acquired			176,000,000
Revenues, Net of Interest Expense			3,300,000
Net income			638,000
MVB Bank [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets			190,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			$ 40,000,000
Cash Consideration [Member] | Peoples Bankshares Inc [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition		$ 12,700,000
Cash Consideration [Member] | Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition	$ 14,250,000
Core Deposits | Peoples Bankshares Inc [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		15 years