Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2019

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

Summary of Regulatory Capital Requirement

Management believes, as of December 31, 2019, that Pinnacle Financial and Pinnacle Bank met all capital adequacy requirements to which they are subject. To be categorized as well-capitalized under applicable banking regulations, Pinnacle Financial and Pinnacle Bank must maintain certain total, Tier 1, common equity Tier 1 and Tier 1 leverage capital ratios as set forth in the following table and not be subject to a written agreement, order or directive to maintain a higher capital level. The capital conservation buffer is not included in the required ratios of the table presented below. Pinnacle Financial's and Pinnacle Bank's actual capital amounts and ratios are presented in the following table (in thousands):

	Actual				Minimum Capital Requirement				Minimum To Be Well-Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2019
Total capital to risk weighted assets:
Pinnacle Financial	$	3,159,375	13.2	%	$	1,912,885	8.0	%	$	2,391,106	10.0	%
Pinnacle Bank	$	2,906,853	12.2	%	$	1,906,839	8.0	%	$	2,383,549	10.0	%
Tier 1 capital to risk weighted assets:
Pinnacle Financial	$	2,319,234	9.7	%	$	1,434,664	6.0	%	$	1,912,885	8.0	%
Pinnacle Bank	$	2,679,713	11.2	%	$	1,430,129	6.0	%	$	1,906,839	8.0	%
Common equity Tier 1 capital:
Pinnacle Financial	$	2,319,112	9.7	%	$	1,075,998	4.5	%	N/A		N/A
Pinnacle Bank	$	2,679,590	11.2	%	$	1,072,597	4.5	%	$	1,549,307	6.5	%
Tier 1 capital to average assets (*):
Pinnacle Financial	$	2,319,234	9.1	%	$	1,021,836	4.0	%	N/A		N/A
Pinnacle Bank	$	2,679,713	10.5	%	$	1,019,210	4.0	%	$	1,274,012	5.0	%
December 31, 2018
Total capital to risk weighted assets:
Pinnacle Financial	$	2,580,143	12.2	%	$	1,691,017	8.0	%	$	2,113,772	10.0	%
Pinnacle Bank	$	2,432,419	11.5	%	$	1,686,046	8.0	%	$	2,107,558	10.0	%
Tier 1 capital to risk weighted assets:
Pinnacle Financial	$	2,024,193	9.6	%	$	1,268,263	6.0	%	$	1,691,017	8.0	%
Pinnacle Bank	$	2,218,003	10.5	%	$	1,264,535	6.0	%	$	1,686,046	8.0	%
Common equity Tier 1 capital:
Pinnacle Financial	$	2,024,070	9.6	%	$	951,197	4.5	%	N/A		N/A
Pinnacle Bank	$	2,217,880	10.5	%	$	948,401	4.5	%	$	1,369,912	6.5	%
Tier 1 capital to average assets (*):
Pinnacle Financial	$	2,024,193	8.9	%	$	909,102	4.0	%	N/A		N/A
Pinnacle Bank	$	2,218,003	9.8	%	$	906,185	4.0	%	$	1,132,731	5.0	%

(*) Average assets for the above calculations were based on the most recent quarter.