Basis of presentation (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Schedule of Basic and Diluted Earnings Per Common Share Calculation

The following is a summary of the basic and diluted earnings per common share calculation for each of the periods presented:

	Three Months Ended March 31,
	2021		2020
Basic earnings per common share calculation:
Net income applicable to FB Financial Corporation	$	52,874	$	745
Dividends paid on and undistributed earnings allocated to participating securities	—		—
Earnings available to common shareholders	$	52,874	$	745
Weighted average basic shares outstanding	47,278,865		31,257,739
Basic earnings per common share	$	1.12	$	0.02
Diluted earnings per common share:
Earnings available to common shareholders	$	52,874	$	745
Weighted average basic shares outstanding	47,278,865		31,257,739
Weighted average diluted shares contingently issuable(1)	690,241		476,373
Weighted average diluted shares outstanding	47,969,106		31,734,112
Diluted earnings per common share	$	1.10	$	0.02

(1)Excludes 87,452 and 153,545 restricted stock units outstanding considered to be antidilutive for the three months ended March 31, 2021 and 2020, respectively.