ACQUISITIONS - Acquired Loans Receivable (Details) - Nonperforming - Access National Bank $ in Thousands	Feb. 01, 2019 USD ($)
Business Acquisition [Line Items]
Contractually required principal and interest payments	$ 24,329
Nonaccretable difference	(4,003)
Cash flows expected to be collected	20,326
Accretable difference	(2,432)
Fair value of loans acquired with a deterioration of credit quality	$ 17,894

Business Combination, Acquired Receivables, Accretable Difference

No definition available.

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- Definition

Business Combination, Acquired Receivables, Cash Flows Expected to be Collected

+ References

No definition available.

+ Details

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- Definition

Business Combination, Acquired Receivables, Nonaccretable Difference

+ References

No definition available.

+ Details

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Namespace Prefix:	ubsh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

+ Details

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Details

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- Details

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