Intangible Assets (Details Narrative) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 31, 2014	Aug. 31, 2009	Aug. 31, 2008
Amortization of Intangible Assets		$ 1,500	$ 1,700	$ 1,500
Goodwill	[1]	104,168	104,168
Virginia Heritage Bank [Member]
Goodwill					$ 102,000
Fidelity [Member]
Goodwill						$ 2,200	$ 360
Non-compete Agreements [Member]
Finite-Lived Intangible Assets, Net	[2]	$ 345
Agreement term		3 years
Core Deposits [Member]
Finite-Lived Intangible Assets, Net	[3]	$ 1,715	$ 2,779
Core Deposits [Member] | Virginia Heritage Bank [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		1,700			$ 4,600
Core Deposits [Member] | Fidelity [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 58					$ 2,300

[1] The Company recorded an initial amount of unidentified intangible (goodwill) incident to the acquisition of Fidelity of approximately $360 thousand. Based on allowable adjustments through August 31, 2009, the unidentified intangible (goodwill) amounted to approximately $2.2 million. The Company recorded an initial amount of unidentified intangible (goodwill) incident to the acquisition of Virginia Heritage of approximately $102 million.

[2] The Company entered into a non-compete agreement for three years with its former Vice Chairman of the Bank. The amount of the non-compete intangible was $345 thousand, which is being amortized over its remaining term through 2020 as a component of professional fees.

[3] In connection with the Fidelity and Virginia Heritage acquisitions, the Company made an allocation of the purchase price to core deposit intangibles which were $2.3 million and $4.6 million, respectively, based off of an independent evaluation and are included in intangible assets, net of accumulated amortization on the Consolidated Balance Sheets. The initial amount recorded for the Fidelity acquisition was $2.3 million. The amount of the core deposit intangible relating to the Fidelity acquisition at December 31, 2017 was $58 thousand, which is being amortized over its remaining economic life through 2018 as a component of other noninterest expense. The initial amount recorded for the Virginia Heritage acquisition was $4.6 million. The amount of the core deposit intangible relating to the Virginia Heritage acquisition at December 31, 2017 was $1.7 million, which is being amortized over its remaining economic life through 2020 as a component of other noninterest expense.