Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill
Beginning balance	$ 242,561
Addition from merger with Southern States (See Note 2)	107,792
Ending balance	$ 350,353

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

FB Financial Corp 10-Q