Significant Accounting Policies - Additional Information (Details)	12 Months Ended
Dec. 31, 2025
EBP 003 [Member]
EBP, Accounting Policy [Line Items]
Acquisition of subsidiary description	On January 10, 2025 (Acquisition Date), United acquired 100% of the outstanding common stock of Piedmont Bancorp, Inc. (Piedmont).

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 235
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479143/962-235-S50-1

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