Basis of presentation (Tables)

6 Months Ended

Jun. 30, 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 June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Basic earnings per common share calculation:
Net income applicable to FB Financial Corporation	$	43,294	$	22,873	$	96,168	$	23,618
Dividends paid on and undistributed earnings allocated to participating securities	—		—		—		—
Earnings available to common shareholders	$	43,294	$	22,873	$	96,168	$	23,618
Weighted average basic shares outstanding	47,351,969		32,094,274		47,312,312		$	31,676,004
Basic earnings per common share	$	0.91	$	0.71	$	2.03	$	0.75
Diluted earnings per common share:
Earnings available to common shareholders	$	43,294	$	22,873	$	96,168	$	23,618
Weighted average basic shares outstanding	47,351,969		32,094,274		47,312,312		31,676,004
Weighted average diluted shares contingently issuable(1)	641,804		412,143		664,221		433,190
Weighted average diluted shares outstanding	47,993,773		32,506,417		47,976,533		32,109,194
Diluted earnings per common share	$	0.90	$	0.70	$	2.00	$	0.74

(1)Excludes 164,472 and 250,776 restricted stock units outstanding considered to be antidilutive for the three and six months ended June 30, 2021, respectively and 352,888 for three and six months ended June 30, 2020.