Borrowings (Tables)

12 Months Ended

Dec. 31, 2024

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The Company has access to various sources of funds that allow for management of interest rate exposure and liquidity. The following table summarizes the Company's outstanding borrowings and weighted average interest rates as of December 31, 2024 and 2023:

	Outstanding Balance				Weighted Average Interest Rate
	December 31,				December 31,
	2024		2023		2024		2023
Securities sold under agreements to repurchase     and federal funds purchased	$	13,499	$	108,764	0.20	%	5.05	%
Bank Term Funding Program	—		130,000		—	%	4.85	%
Subordinated debt, net	130,704		129,645		5.28	%	5.52	%
Other borrowings	32,586		22,555		0.07	%	0.10	%
Total	$	176,789	$	390,964

Schedule of Securities Sold under Agreement to Repurchase

Information concerning securities sold under agreement to repurchase and federal funds purchased is summarized as follows:

	December 31, 2024			December 31, 2023
Balance at year end	$	13,499		$	108,764
Average daily balance during the year	21,339			29,860
Average interest rate during the year	1.72		%	2.24		%
Maximum month-end balance during the year	$	78,228		$	116,220
Weighted average interest rate at year-end	0.20		%	5.05		%

Schedule of Federal Home Loan Bank, Advances

Information concerning FHLB advances as of or for the years ended December 31, 2024 and 2023 is summarized within the table below.

	December 31, 2024			December 31, 2023
Balance at year end	$	—		$	—
Average daily balance during the year	—			28,973
Average interest rate during the year	—		%	5.13		%
Maximum month-end balance during the year	$	—		$	125,000
Weighted average interest rate at year-end	—		%	—		%

Schedule of Bank Term Funding Program

Information concerning the BTFP as of or for the years ended December 31, 2024 and 2023 is summarized within the table below.

	December 31, 2024			December 31, 2023
Balance at year end	$	—		$	130,000
Average daily balance during the year	95,902			1,781
Average interest rate during the year	4.86		%	4.85		%
Maximum month-end balance during the year	$	130,000		$	130,000
Weighted average interest rate at year-end	—		%	4.85		%

Schedule of Subordinated Borrowing

Further information related to the Company's subordinated debt as of December 31, 2024 is detailed below:

Name	Year Established	Maturity	Call Date	Total Debt Outstanding		Interest Rate	Coupon Structure
Subordinated Debt issued by Trust Preferred Securities:
FBK Trust I (1)	2003	06/09/2033	6/09/2008	$	9,280	7.84%	3-month SOFR plus 3.51%
FBK Trust II (1)	2003	06/26/2033	6/26/2008	21,650		7.74%	3-month SOFR plus 3.41%
Additional Subordinated Debt:
FBK Subordinated Debt I(2)	2020	09/01/2030	9/1/2025	100,000		4.50%	Semi-annual Fixed (3)
Unamortized debt issuance costs				(226)
Total Subordinated Debt, net				$	130,704
(1)The Company classifies $30,000 of the trusts' subordinated debt as Tier 1 capital. (2)The Company classifies the issuance, net of unamortized issuance costs as Tier 2 capital, which will be phased out 20% per year in the final five      years before maturity.  (3)Beginning on September 1, 2025 the coupon structure migrates to the 3-month SOFR plus a spread of 439 basis points through the end of the term      of the debenture.