Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2023

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Summary of Bank's Actual Capital Amounts and Ratios

As of December 31, 2023:	Actual					Required For Capital Adequacy Purposes			To Be Well Capitalized Under Prompt Corrective Action Regulations (1)
	Amount		Ratio			Amount		Ratio	Amount		Ratio
River Financial Corporation
Total Capital (To Risk-Weighted Assets)	$	306,917		12.948	%	$	248,890	>= 10.500%	N/A		N/A
Common Equity Tier 1 Capital (To Risk-    weighted Assets)		237,927		10.037	%		165,935	>= 7.000%	N/A		N/A
Tier 1 Capital (To Risk-Weighted Assets)		237,927		10.037	%		201,492	>= 8.500%	N/A		N/A
Tier 1 Capital (To Average Assets)		237,927		7.505	%		126,810	>= 4.000%	N/A		N/A
River Bank:
Total Capital (To Risk-Weighted Assets)	$	303,279		12.794	%	$	248,892	>= 10.500%	$	237,040	>= 10.000%
Common Equity Tier 1 Capital (To Risk-    weighted Assets)		274,289		11.571	%		165,928	>= 7.000%	$	154,076	>= 6.500%
Tier 1 Capital (To Risk-Weighted Assets)		274,289		11.571	%		201,484	>= 8.500%	$	189,632	>= 8.000%
Tier 1 Capital (To Average Assets)		274,289		8.652	%		126,807	>= 4.000%	$	158,508	>= 5.000%
(1) the prompt corrective action provisions are applicable at the Bank level only.

As of December 31, 2022:	Actual					Required For Capital Adequacy Purposes			To Be Well Capitalized Under Prompt Corrective Action Regulations
	Amount		Ratio			Amount		Ratio	Amount		Ratio
River Financial Corporation
Total Capital (To Risk-Weighted Assets)	$	244,657		12.423	%	$	206,786	>= 10.500%	N/A		N/A
Common Equity Tier 1 Capital (To Risk-    weighted Assets)		180,347		9.157	%		137,865	>= 7.000%	N/A		N/A
Tier 1 Capital (To Risk-Weighted Assets)		180,347		9.157	%		167,407	>= 8.500%	N/A		N/A
Tier 1 Capital (To Average Assets)		180,347		6.722	%		107,317	>= 4.000%	N/A		N/A
River Bank:
Total Capital (To Risk-Weighted Assets)	$	242,168		12.296	%	$	206,789	>= 10.500%	$	196,942	>= 10.000%
Common Equity Tier 1 Capital (To Risk-    weighted Assets)		217,858		11.062	%		137,860	>= 7.000%		128,013	>= 6.500%
Tier 1 Capital (To Risk-Weighted Assets)		217,858		11.062	%		167,401	>= 8.500%		157,554	>= 8.000%
Tier 1 Capital (To Average Assets)		217,858		8.120	%		107,315	>= 4.000%		134,144	>= 5.000%