Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2016

Regulatory Matters [Abstract]

Summary of Regulatory Capital Requirement

The final rules implementing the Basel Committee on Banking Supervision's capital guidelines for U.S. banks (Basel III rules) became effective for Pinnacle Financial on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. The minimum capital level requirements applicable to bank holding companies and banks subject to the rules are: (i) a common equity Tier 1 capital ratio of 4.5%; (ii) a Tier 1 risk-based capital ratio of 6%; (iii) a total risk-based capital ratio of 8%; and (iv) a Tier 1 leverage ratio of 4% for all institutions. The Basel III rules, also establish a capital conservation buffer of 2.5% (to be phased in over three years) above the regulatory minimum risk-based capital ratios. The capital conservation buffer is to be phased in beginning in January 2016 at 0.625% and is scheduled to increase each year by a like percentage until fully implemented in January 2019. The net unrealized gain or loss on available-for-sale securities is not included in computing regulatory capital. Management believes, as of December 31, 2016, 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 minimum total risk-based, Tier 1 risk-based, common equity Tier 1 and Tier 1 leverage 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. 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, 2016
Total capital to risk weighted assets:
Pinnacle Financial	$	1,211,105		11.9	%	$	816,857		8.0	%	$	1,021,071		10.0	%
Pinnacle Bank	$	1,136,782		11.2	%	$	814,254		8.0	%	$	1,017,817		10.0	%
Tier 1 capital to risk weighted assets:
Pinnacle Financial	$	882,654		8.6	%	$	612,643		6.0	%	$	816,857		8.0	%
Pinnacle Bank	$	949,193		9.3	%	$	610,690		6.0	%	$	814,254		8.0	%
Common equity Tier 1 capital:
Pinnacle Financial	$	802,532		7.9	%	$	459,482		4.5	%	$	663,696		6.5	%
Pinnacle Bank	$	949,070		9.3	%	$	458,018		4.5	%	$	661,581		6.5	%
Tier 1 capital to average assets (*):
Pinnacle Financial	$	882,654		8.6	%	$	412,902		4.0	%		N/A		N/A
Pinnacle Bank	$	949,193		9.2	%	$	412,124		4.0	%	$	515,155		5.0	%
At December 31, 2015
Total capital to risk weighted assets:
Pinnacle Financial	$	883,085		11.2	%	$	628,500		8.0	%	$	785,624		10.0	%
Pinnacle Bank	$	830,863		10.6	%	$	626,486		8.0	%	$	783,107		10.0	%
Tier 1 capital to risk weighted assets:
Pinnacle Financial	$	756,316		9.6	%	$	471,375		6.0	%	$	628,500		8.0	%
Pinnacle Bank	$	704,095		9.0	%	$	469,864		6.0	%	$	626,486		8.0	%
Common equity Tier 1 capital:
Pinnacle Financial	$	676,316		8.6	%	$	353,531		4.5	%	$	510,656		6.5	%
Pinnacle Bank	$	704,095		9.0	%	$	352,398		4.5	%	$	509,020		6.5	%
Tier 1 capital to average assets (*):
Pinnacle Financial	$	756,316		9.4	%	$	322,920		4.0	%		N/A		N/A
Pinnacle Bank	$	704,095		8.8	%	$	321,991		4.0	%	$	402,489		5.0	%

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