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Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 31, 2014	Aug. 31, 2009	Aug. 31, 2008
Amortization of intangible assets	$ 1,200	$ 1,600	$ 1,500
Goodwill	104,168	104,168
Virginia Heritage
Goodwill				$ 102,000
Fidelity
Goodwill					$ 2,200	$ 360
Non-compete Agreements
Finite-lived intangible assets, net	21	$ 262
Agreement term		3 years
Core Deposits
Finite-lived intangible assets, net	43	$ 758
Core Deposits | Virginia Heritage
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		$ 4,600
Core Deposits | Fidelity
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles	$ 43					$ 2,300

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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