Label	Element	Value
Middleburg Financial Corporation [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noninterest-bearing Deposits	ancx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNoninterestbearingDeposits	$ 282,752,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialAssets	244,123,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities	55,925,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Interest-bearing Deposits	ancx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedInterestbearingDeposits	773,867,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	$ 358,860,000