Pinnacle Financial Partners (PNFP) 10-Q 5 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	000-31225
Entity Registrant Name	Pinnacle Financial Partners Inc.
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-1812853
Entity Address, Address Line One	150 Third Avenue South, Suite 900
Entity Address, City or Town	Nashville,
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37201
City Area Code	(615)
Local Phone Number	744-3700
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		76,136,435
Entity Central Index Key	0001115055
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Noncumulative Preferred Stock [Member]
Cover [Abstract]
Title of 12(b) Security	Depositary Shares (each representing 1/40th interest in a share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B)
Trading Symbol	PNFPP
Security Exchange Name	NASDAQ
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares (each representing 1/40th interest in a share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B)
Trading Symbol	PNFPP
Security Exchange Name	NASDAQ
Common Class A [Member]
Cover [Abstract]
Title of 12(b) Security	Common Stock, par value $1.00
Trading Symbol	PNFP
Security Exchange Name	NASDAQ
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $1.00
Trading Symbol	PNFP
Security Exchange Name	NASDAQ

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets [Abstract]
Cash and noninterest-bearing due from banks	$ 155,965	$ 203,296
Restricted cash	104,157	223,788
Interest-bearing due from banks	3,206,383	3,522,224
Federal funds sold and other	0	12,141
Cash and cash equivalents	3,466,505	3,961,449
Securities purchased with agreement to resell	500,000	0
Debt Securities, Available-for-sale	4,634,653	3,586,681
Securities held-to-maturity (fair value of $1.0 billion and $1.1 billion, net of allowance for credit losses of $161 and $191 at Sept. 30, 2021 and Dec. 31, 2020, respectively)	989,237	1,028,359
Consumer loans held-for-sale	55,273	87,821
Commercial loans held-for-sale	49,121	31,200
Loans	23,058,461	22,424,501
Less allowance for credit losses	(268,635)	(285,050)
Loans, net	22,789,826	22,139,451
Premises and equipment, net	288,833	290,001
Equity method investment	333,764	308,556
Accrued interest receivable	89,137	104,078
Goodwill	1,819,811	1,819,811
Core deposits and other intangible assets	35,876	42,336
Other real estate owned	8,415	12,360
Other assets	1,463,485	1,520,757
Total assets	36,523,936	34,932,860
Deposits:
Noninterest-bearing	9,809,691	7,392,325
Interest-bearing	5,767,286	5,689,095
Savings and money market accounts	11,381,033	11,099,523
Time	2,411,797	3,524,632
Total deposits	29,369,807	27,705,575
Securities sold under agreements to repurchase	148,240	128,164
Federal Home Loan Bank advances	888,493	1,087,927
Subordinated debt and other borrowings	542,712	670,575
Accrued interest payable	11,838	24,934
Other liabilities	371,048	411,074
Total liabilities	31,332,138	30,028,249
Shareholders' equity:
Preferred stock, no par value, 10.0 million shares authorized; 225,000 shares non-cumulative perpetual preferred stock, Series B, liquidation preference $225.0 million, issued and outstanding at Sept. 30, 2021 and Dec. 31, 2020, respectively	217,126	217,126
Common stock, par value $1.00; 180.0 million shares authorized; 76.1 million and 75.9 million shares issued and outstanding at Sept. 30, 2021 and Dec. 31, 2020, respectively	76,115	75,850
Additional paid-in capital	3,038,800	3,028,063
Retained earnings	1,748,491	1,407,723
Accumulated other comprehensive income, net of taxes	111,266	175,849
Total shareholders' equity	5,191,798	4,904,611
Liabilities and Equity	$ 36,523,936	$ 34,932,860

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Securities held-to-maturity, fair value	$ 1,014,407,000	$ 1,066,531,000
Allowance for credit losses - securities held-to-maturity	$ (161,000)	$ (191,000)
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	225,000	225,000
Preferred stock, shares outstanding (in shares)	225,000	225,000
Preferred Stock, Liquidation Preference Per Share	$ 1,000	$ 1,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	180,000,000	180,000,000
Common stock, shares issued (in shares)	76,115,000	75,850,000
Common stock, shares outstanding (in shares)	76,115,000	75,850,000

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income:
Loans, including fees	$ 233,857	$ 224,482	$ 694,017	$ 687,183
Securities:
Taxable	8,986	8,276	25,073	28,133
Tax-exempt	15,873	15,001	47,917	43,421
Federal funds sold and other	2,152	1,429	5,014	5,258
Total interest income	260,868	249,188	772,021	763,995
Interest expense:
Deposits	12,139	28,401	43,468	112,826
Securities sold under agreements to repurchase	57	77	185	286
Federal Home Loan Bank advances and other borrowings	11,129	14,116	34,730	50,080
Total interest expense	23,325	42,594	78,383	163,192
Net interest income	237,543	206,594	693,638	600,803
Provision for credit losses	3,382	16,758	13,451	194,635
Net interest income after provision for credit losses	234,161	189,836	680,187	406,168
Noninterest income:
Total noninterest income	104,095	91,065	295,011	234,396
Noninterest expense:
Salaries and employee benefits	112,406	90,103	325,958	244,470
Equipment and occupancy	23,712	21,622	70,253	64,626
Other real estate (income) expense, net	(79)	1,795	(749)	7,098
Marketing and other business development	3,325	2,321	8,326	7,714
Postage and supplies	2,083	1,761	6,004	5,821
Amortization of intangibles	2,088	2,417	6,461	7,416
Other noninterest expense	25,316	23,833	73,434	66,005
Total noninterest expense	168,851	143,852	489,687	403,150
Income before income taxes	169,405	137,049	485,511	237,414
Income tax expense	32,828	26,404	91,716	35,969
Net income	136,577	110,645	393,795	201,445
Preferred stock dividends	(3,798)	(3,798)	(11,394)	(3,798)
Net income available to common shareholders	$ 132,779	$ 106,847	$ 382,401	$ 197,647
Per share information:
Basic net income per common share	$ 1.76	$ 1.42	$ 5.07	$ 2.62
Diluted net income per common share	$ 1.75	$ 1.42	$ 5.05	$ 2.62
Weighted average common shares outstanding:
Basic	75,494,286	75,240,664	75,449,900	75,417,663
Diluted	75,836,142	75,360,033	75,760,618	75,544,677
Service charges on deposit accounts
Noninterest income:
Total noninterest income	$ 11,435	$ 9,854	$ 28,648	$ 25,796
Investment services
Noninterest income:
Total noninterest income	9,648	6,734	26,836	21,944
Insurance sales commissions
Noninterest income:
Total noninterest income	2,557	2,284	8,188	7,755
Gain on mortgage loans sold, net
Noninterest income:
Total noninterest income	7,814	19,453	28,180	47,655
Investment gains on sales, net
Noninterest income:
Total noninterest income	0	651	366	986
Trust fees
Noninterest income:
Total noninterest income	5,049	3,986	14,798	12,114
Income from equity method investment
Noninterest income:
Total noninterest income	30,409	26,445	91,430	59,245
Other noninterest income
Noninterest income:
Total noninterest income	$ 37,183	$ 21,658	$ 96,565	$ 58,901

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 136,577,000	$ 110,645,000	$ 393,795,000	$ 201,445,000
Other comprehensive income (loss), net of tax:
Change in fair value on available-for-sale securities, net of tax	(28,506,000)	523,000	(33,636,000)	69,402,000
Change in fair value of cash flow hedges, net of tax	0	(5,213,000)	(18,373,000)	60,426,000
Accretion of net unrealized gains on securities transferred from available-for-sale to held-to-maturity, net of tax	(1,989,000)	(1,523,000)	(5,778,000)	(3,504,000)
Net (gain) loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax	(4,338,000)	156,000	(6,526,000)	1,858,000
Net gain on sale of investment securities reclassified from other comprehensive income into net income, net of tax	0	(481,000)	(270,000)	(728,000)
Total other comprehensive income (loss), net of tax	(34,833,000)	(6,538,000)	(64,583,000)	127,454,000
Total comprehensive income	$ 101,744,000	$ 104,107,000	$ 329,212,000	$ 328,899,000

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	AOCI Attributable to Parent	Accounting Standards Update 2016-13	Accounting Standards Update 2016-13Retained Earnings
Common Stock, Dividends, Per Share, Cash Paid	$ 0.16
Balance at Dec. 31, 2019	$ 4,355,748		$ 76,564	$ 3,064,467	$ 1,184,183	$ 30,534
Balance (in shares) at Dec. 31, 2019			76,564,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee common stock options & related tax benefits	5		$ 1	4
Exercise of employee common stock options and related tax benefits (in shares)			1,000
Common dividends paid	(12,442)				(12,442)
Repurchase of common stock	(50,790)		$ (1,015)	(49,775)
Repurchase of common stock (in shares)			(1,015,000)
Issuance of restricted common shares, net of forfeitures	0		$ 198	(198)
Issuance of restricted common shares, net of forfeitures (in shares)			198,000
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits	2,468		$ (84)	2,552
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)			(84,000)
Restricted shares withheld for taxes & related benefits	(1,958)		$ (32)	(1,926)
Restricted shares withheld for taxes (in shares)			(32,000)
Stock-based compensation expense	5,501			5,501
Net income	28,356				28,356
Cumulative effect of change in accounting principle							$ (31,796)	$ (31,796)
Other comprehensive income (loss)	94,972					94,972
Balance at Mar. 31, 2020	4,385,128	$ 0	$ 75,800	3,015,521	1,168,301	125,506
Balance (in shares) at Mar. 31, 2020			75,800,000
Balance at Dec. 31, 2019	4,355,748		$ 76,564	3,064,467	1,184,183	30,534
Balance (in shares) at Dec. 31, 2019			76,564,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	14,092
Net income	201,445
Other comprehensive income (loss)	127,454
Balance at Sep. 30, 2020	$ 4,787,308	217,126	$ 75,835	3,023,430	1,312,929	157,988
Balance (in shares) at Sep. 30, 2020			75,835,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.16
Balance at Mar. 31, 2020	$ 4,385,128	0	$ 75,800	3,015,521	1,168,301	125,506
Balance (in shares) at Mar. 31, 2020			75,800,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of preferred stock, net of issuance costs	217,632	217,632
Exercise of employee common stock options & related tax benefits	225		$ 9	216
Exercise of employee common stock options and related tax benefits (in shares)			9,000
Common dividends paid	(12,378)				(12,378)
Issuance of restricted common shares, net of forfeitures	0		$ 38	(38)
Issuance of restricted common shares, net of forfeitures (in shares)			38,000
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits	(19)		$ (2)	21
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)			(2,000)
Restricted shares withheld for taxes & related benefits	(553)		$ (13)	(540)
Restricted shares withheld for taxes (in shares)			(13,000)
Stock-based compensation expense	4,148			4,148
Net income	62,444				62,444
Other comprehensive income (loss)	39,020					39,020
Balance at Jun. 30, 2020	$ 4,695,647	217,632	$ 75,836	3,019,286	1,218,367	164,526
Balance (in shares) at Jun. 30, 2020			75,836,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.16
Preferred Stock, Dividends, Per Share, Cash Paid	$ 16.88
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of preferred stock, net of issuance costs	$ (506)	(506)
Preferred dividends paid	(3,798)				(3,798)
Common dividends paid	(12,285)				(12,285)
Issuance of restricted common shares, net of forfeitures	0		$ 6	(6)
Issuance of restricted common shares, net of forfeitures (in shares)			6,000
Restricted shares withheld for taxes & related benefits	(300)		$ (7)	(293)
Restricted shares withheld for taxes (in shares)			(7,000)
Stock-based compensation expense	4,443			4,443
Net income	110,645				110,645
Other comprehensive income (loss)	(6,538)					(6,538)
Balance at Sep. 30, 2020	$ 4,787,308	217,126	$ 75,835	3,023,430	1,312,929	157,988
Balance (in shares) at Sep. 30, 2020			75,835,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.18
Preferred Stock, Dividends, Per Share, Cash Paid	$ 16.88
Balance at Dec. 31, 2020	$ 4,904,611	217,126	$ 75,850	3,028,063	1,407,723	175,849
Balance (in shares) at Dec. 31, 2020			75,850,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(3,798)				(3,798)
Exercise of employee common stock options & related tax benefits	304		$ 13	291
Exercise of employee common stock options and related tax benefits (in shares)			13,000
Common dividends paid	(13,902)				(13,902)
Issuance of restricted common shares, net of forfeitures	0		$ 172	(172)
Issuance of restricted common shares, net of forfeitures (in shares)			172,000
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits	3,762		$ (86)	3,848
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)			(86,000)
Restricted shares withheld for taxes & related benefits	(2,456)		$ (34)	(2,422)
Restricted shares withheld for taxes (in shares)			(34,000)
Stock-based compensation expense	5,399			5,399
Net income	125,428				125,428
Other comprehensive income (loss)	(52,301)					(52,301)
Balance at Mar. 31, 2021	4,959,523	217,126	$ 76,087	3,027,311	1,515,451	123,548
Balance (in shares) at Mar. 31, 2021			76,087,000
Balance at Dec. 31, 2020	4,904,611	217,126	$ 75,850	3,028,063	1,407,723	175,849
Balance (in shares) at Dec. 31, 2020			75,850,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	17,834
Net income	393,795
Other comprehensive income (loss)	(64,583)
Balance at Sep. 30, 2021	$ 5,191,798	217,126	$ 76,115	3,038,800	1,748,491	111,266
Balance (in shares) at Sep. 30, 2021			76,115,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.18
Preferred Stock, Dividends, Per Share, Cash Paid	$ 16.88
Balance at Mar. 31, 2021	$ 4,959,523	217,126	$ 76,087	3,027,311	1,515,451	123,548
Balance (in shares) at Mar. 31, 2021			76,087,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(3,798)				(3,798)
Exercise of employee common stock options & related tax benefits	100		$ 5	95
Exercise of employee common stock options and related tax benefits (in shares)			5,000
Common dividends paid	(13,863)				(13,863)
Issuance of restricted common shares, net of forfeitures	0		$ 3	(3)
Issuance of restricted common shares, net of forfeitures (in shares)			3,000
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits	(2)		$ (1)	3
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)			(1,000)
Restricted shares withheld for taxes & related benefits	(739)		$ (8)	(731)
Restricted shares withheld for taxes (in shares)			(8,000)
Stock-based compensation expense	5,669			5,669
Net income	131,790				131,790
Other comprehensive income (loss)	22,551					22,551
Balance at Jun. 30, 2021	$ 5,101,231	217,126	$ 76,088	3,032,338	1,629,580	146,099
Balance (in shares) at Jun. 30, 2021			76,088,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.18
Preferred Stock, Dividends, Per Share, Cash Paid	$ 16.88
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	$ (3,798)				(3,798)
Exercise of employee common stock options & related tax benefits	300		$ 14	286
Exercise of employee common stock options and related tax benefits (in shares)			14,000
Common dividends paid	(13,868)				(13,868)
Issuance of restricted common shares, net of forfeitures	0		$ 19	(19)
Issuance of restricted common shares, net of forfeitures (in shares)			19,000
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits	(26)		$ 1	(27)
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)			1,000
Restricted shares withheld for taxes & related benefits	(551)		$ (7)	(544)
Restricted shares withheld for taxes (in shares)			(7,000)
Stock-based compensation expense	6,766			6,766
Net income	136,577				136,577
Other comprehensive income (loss)	(34,833)					(34,833)
Balance at Sep. 30, 2021	$ 5,191,798	$ 217,126	$ 76,115	$ 3,038,800	$ 1,748,491	$ 111,266
Balance (in shares) at Sep. 30, 2021			76,115,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income	$ 393,795	$ 201,445
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization/accretion of premium/discount on securities	41,415	26,771
Depreciation, amortization and accretion	39,630	32,127
Provision for credit losses	13,451	194,635
Gain on mortgage loans sold, net	(28,180)	(47,655)
Investment gains on sales, net	(366)	(986)
Gain on other equity investments, net	19,000	8
Stock-based compensation expense	17,834	14,092
Deferred tax expense (benefit)	2,317	(31,288)
Losses (gains) on dispositions of other real estate and other investments	(986)	6,600
Income from equity method investment	(91,430)	(59,245)
Dividends received from equity method investment	66,221	47,981
Excess tax benefit from stock compensation	(2,201)	(505)
Gain on commercial loans sold, net	(3,136)	(1,856)
Decrease (increase) in other assets	22,093	(188,675)
Increase (decrease) in other liabilities	(58,720)	54,407
Net cash provided by operating activities	438,680	301,717
Activities in securities available-for-sale:
Purchases	1,607,533	1,189,922
Sales	2,240	145,631
Maturities, prepayments and calls	456,547	356,690
Activities in securities held-to-maturity:
Purchases	8,710	0
Maturities, prepayments and calls	33,864	13,345
Increase in securities purchased under agreements to resell	(500,000)	0
Increase in loans, net	(662,490)	(2,705,594)
Purchases of software, premises and equipment	(16,616)	(30,309)
Proceeds from sales of software, premises and equipment	281	0
Proceeds from sale of other real estate	5,728	7,191
Proceeds from bank owned life insurance settlements	954	4,580
Proceeds from derivative instruments	99,710	35,680
Proceeds from sale of FHLB stock	12,602	0
Purchase of trade name	0	(1,000)
Increase in other investments	(44,568)	(50,327)
Net cash used in investing activities	(2,227,991)	(3,414,035)
Financing activities:
Net increase in deposits	1,664,344	6,363,187
Net increase in securities sold under agreements to repurchase	20,076	705
Federal Home Loan Bank: Advances	0	762,472
Federal Home Loan Bank: Repayments/maturities	(200,000)	(1,537,520)
Advances of other borrowings, net of issuance costs	0	56,568
Repayments of other borrowings	(130,000)	(136,661)
Principal payments of finance lease obligation	(194)	(180)
Issuance of preferred stock, net of issuance costs	0	217,126
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes	(3,790)	(2,488)
Exercise of common stock options, net of shares surrendered for taxes	(3,042)	(2,580)
Repurchase of common stock	0	(50,790)
Common stock dividends paid	(41,633)	(37,105)
Preferred stock dividends paid	(11,394)	(3,798)
Net cash provided by financing activities	1,294,367	5,628,936
Net increase (decrease) in cash, cash equivalents, and restricted cash	(494,944)	2,516,618
Cash, cash equivalents, and restricted cash, beginning of period	3,961,449	526,707
Cash, cash equivalents, and restricted cash, end of period	3,466,505	3,043,325
Commercial Loan
Adjustments to reconcile net income to net cash provided by operating activities:
Loans held-for-sale originated	(433,555)	(271,996)
Loans held-for-sale sold	418,770	279,147
Consumer Loan
Adjustments to reconcile net income to net cash provided by operating activities:
Loans held-for-sale originated	(1,579,745)	(1,550,290)
Loans held-for-sale sold	$ 1,640,473	$ 1,597,016

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1. Summary of Significant Accounting Policies Nature of Business — Pinnacle Financial Partners, Inc. (Pinnacle Financial) is a financial holding company whose primary business is conducted by its wholly-owned subsidiary, Pinnacle Bank. Pinnacle Bank is a commercial bank headquartered in Nashville, Tennessee. Pinnacle Financial completed its acquisitions of CapitalMark Bank & Trust (CapitalMark), Magna Bank (Magna), Avenue Financial Holdings, Inc. (Avenue), BNC Bancorp (BNC) and Advocate Capital, Inc. (Advocate Capital) on July 31, 2015, September 1, 2015, July 1, 2016, June 16, 2017 and July 2, 2019, respectively. Pinnacle Financial and Pinnacle Bank also collectively hold a 49% interest in Bankers Healthcare Group, LLC (BHG), a company that primarily serves as a full-service commercial loan provider to healthcare and other professional practices. Pinnacle Bank provides a full range of banking services, including investment, mortgage, insurance, and comprehensive wealth management services, in its 14 primarily urban markets across the Southeast. Basis of Presentation — The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles (U.S. GAAP). All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in Pinnacle Financial's Annual Report on Form 10-K for the year ended December 31, 2020 (2020 10-K). These consolidated financial statements include the accounts of Pinnacle Financial and its wholly-owned subsidiaries. Certain statutory trust affiliates of Pinnacle Financial, as noted in Note 11. Other Borrowings are included in these consolidated financial statements pursuant to the equity method of accounting. Significant intercompany transactions and accounts are eliminated in consolidation. Use of Estimates — The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include the determination of the allowance for credit losses and determination of any impairment of goodwill or intangible assets. There have been no significant changes to Pinnacle Financial's significant accounting policies as disclosed in the 2020 10-K. Cash Flow Information — Supplemental cash flow information addressing certain cash and noncash transactions for the nine months ended September 30, 2021 and 2020 was as follows (in thousands): For the nine months ended 2021 2020 Cash Transactions: Interest paid $ 90,651 $ 179,163 Income taxes paid, net 88,614 89,858 Operating lease payments 10,878 10,077 Noncash Transactions: Loans charged-off to the allowance for credit losses 39,319 35,724 Loans foreclosed upon and transferred to other real estate owned 798 3,435 Loans foreclosed upon and transferred to other assets — 25 Available-for-sale securities transferred to held-to-maturity portfolio — 873,613 Right-of-use asset recognized during the period in exchange for lease obligations 8,745 5,269 Income Per Common Share — Basic net income per common share (EPS) is computed by dividing net income available to common shareholders by the weighted average common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The difference between basic and diluted weighted average common shares outstanding is attributable to common stock options, restricted share awards, and restricted share unit awards. The dilutive effect of outstanding options, restricted share awards, and restricted share unit awards is reflected in diluted EPS by application of the treasury stock method. The following is a summary of the basic and diluted net income per common share calculations for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data): Three months ended Nine months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Basic net income per common share $ 1.76 $ 1.42 $ 5.07 $ 2.62 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Dilutive common shares contingently issuable 342 119 311 127 Weighted average diluted common shares outstanding 75,836 75,360 75,761 75,545 Diluted net income per common share $ 1.75 $ 1.42 $ 5.05 $ 2.62 Recently Adopted Accounting Pronouncements — In January 2020, the FASB issued Accounting Standards Update 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815. These amendments, among other things, clarify that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments-Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments also clarify that when determining the accounting for certain forward contracts and purchased options a company should not consider, whether upon settlement or exercise, if the underlying securities would be accounted for under the equity method or fair value option. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. An entity should apply ASU 2020-01 prospectively at the beginning of the interim period that includes the adoption date. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements. In December 2019, the FASB issued Accounting Standards Update 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes to simplify various aspects of the current guidance to promote consistent application of the standard among reporting entities by moving certain exceptions to the general principles. The amendments are effective for fiscal years beginning after December 15, 2020. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements. In March 2020, the FASB issued Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , and has issued subsequent amendments thereto, which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The ASU provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. It is intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. Pinnacle Financial is implementing a transition plan to identify and modify its loans and other financial instruments, including certain indebtedness, with attributes that are either directly or indirectly influenced by LIBOR. Pinnacle Financial is assessing ASU 2020-04 and its impact on the transition away from LIBOR for its loans and other financial instruments. Newly Issued Not Yet Effective Accounting Standards — Other than those pronouncements discussed above which have been recently adopted, Pinnacle Financial does not believe there were any other recently issued accounting pronouncements that are expected to materially impact its consolidated financial statements. Reclassifications — Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or stockholder's equity. Subsequent Events — ASC Topic 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. Pinnacle Financial evaluated all events or transactions that occurred after September 30, 2021 through the date of the issued financial statements.

Equity method investment

Equity method investment	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity method investment	Note 2. Equity method investment A summary of BHG's financial position as of September 30, 2021 and December 31, 2020 and results of operations as of and for the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands): As of September 30, 2021 December 31, 2020 Assets $ 2,443,304 $ 1,330,317 Liabilities 2,110,765 1,088,135 Equity interests 332,539 242,182 Total liabilities and equity $ 2,443,304 $ 1,330,317 For the three months ended For the nine months ended 2021 2020 2021 2020 Revenues $ 192,160 $ 128,510 $ 528,767 $ 319,244 Net income $ 63,280 $ 51,459 $ 184,195 $ 121,604 At September 30, 2021, technology, trade name and customer relationship intangibles, net of related amortization, totaled $7.0 million compared to $7.6 million as of December 31, 2020. Amortization expense of $188,000 and $564,000, respectively, was included for the three and nine months ended September 30, 2021 compared to $293,000 and $880,000, respectively, for the same periods in the prior year. Accretion income of $349,000 and $1.2 million, respectively, was included in the three and nine months ended September 30, 2021 compared to $535,000 and $1.6 million, respectively, for the same periods in the prior year. During the three and nine months ended September 30, 2021, Pinnacle Financial and Pinnacle Bank received dividends of $16.8 million and $66.2 million, respectively, from BHG in the aggregate. During the three and nine months ended September 30, 2020, Pinnacle Financial and Pinnacle Bank received dividends of $40.0 million and $48.0 million, respectively, from BHG in the aggregate. Earnings from BHG are included in Pinnacle Financial's consolidated tax return. Profits from intercompany transactions are eliminated. During the three and nine months ended September 30, 2021, Pinnacle Bank purchased $75.8 million and $200.7 million, respectively, of loans from BHG compared to purchases of $50.2 million for the three and nine months ended September 30, 2020. These loans were purchased at par pursuant to BHG's joint venture loan program whereby BHG and Pinnacle share proportionately in the credit risk of the acquired loans based on the rate on the loan and the rate of the purchase. The yield on this portfolio to Pinnacle Bank is anticipated to be between 4.75% and 5.00% per annum. At September 30, 2021 and December 31, 2020, there were $263.2 million and $95.8 million, respectively, of BHG joint venture program loans held by Pinnacle Bank.

Securities

Securities	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Securities	Note 3. Securities The amortized cost and fair value of securities available-for-sale and held-to-maturity at September 30, 2021 and December 31, 2020 are summarized as follows (in thousands): Amortized Gross Gross Fair September 30, 2021: Securities available-for-sale: U.S. Treasury securities $ 144,387 $ — $ 230 $ 144,157 U.S. government agency securities 423,481 1,566 2,992 422,055 Mortgage-backed securities 1,938,218 41,663 11,900 1,967,981 State and municipal securities 1,733,063 38,130 11,545 1,759,648 Asset-backed securities 220,716 214 733 220,197 Corporate notes and other 119,276 3,306 1,967 120,615 $ 4,579,141 $ 84,879 $ 29,367 $ 4,634,653 Securities held-to-maturity: State and municipal securities $ 989,398 $ 25,817 $ 808 $ 1,014,407 $ 989,398 $ 25,817 $ 808 $ 1,014,407 Allowance for credit losses - securities held-to-maturity (161) Securities held-to-maturity, net of allowance for credit losses $ 989,237 December 31, 2020: Securities available-for-sale: U.S. Treasury securities $ 82,199 $ 10 $ — $ 82,209 U.S. government agency securities 74,916 1,547 60 76,403 Mortgage-backed securities 1,623,759 67,759 2,327 1,689,191 State and municipal securities 1,411,288 44,559 12,484 1,443,363 Asset-backed securities 177,878 715 657 177,936 Corporate notes and other 117,256 2,632 2,309 117,579 $ 3,487,296 $ 117,222 17,837 $ 3,586,681 Securities held-to-maturity: State and municipal securities $ 1,028,550 $ 38,272 $ 291 $ 1,066,531 $ 1,028,550 $ 38,272 $ 291 $ 1,066,531 Allowance for credit losses - securities held-to-maturity (191) Securities held-to-maturity, net of allowance for credit losses $ 1,028,359 During the quarters ended March 31, 2020 and September 30, 2018, Pinnacle Financial transferred, at fair value, $873.6 million and $179.8 million, respectively, of municipal securities from the available-for-sale portfolio to the held-to-maturity portfolio. The related net unrealized after tax gains of $69.0 million and net unrealized after tax losses of $2.2 million, respectively, remained in accumulated other comprehensive income (loss) and are being amortized over the remaining life of the securities, offsetting the related amortization of discount or premium on the transferred securities. No gains or losses were recognized at the time of the transfer. At September 30, 2021, approximately $649.5 million of securities within Pinnacle Financial's investment portfolio were pledged to secure either public funds and other deposits or securities sold under agreements to repurchase. At September 30, 2021, repurchase agreements comprised of secured borrowings totaled $148.2 million and were secured by $148.2 million of pledged U.S. government agency securities, mortgage-backed securities, municipal securities, asset-backed securities, and corporate debentures. As the fair value of securities pledged to secure repurchase agreements may decline, Pinnacle Financial regularly evaluates its need to pledge additional securities to remain adequately secured. The amortized cost and fair value of debt securities as of September 30, 2021 by contractual maturity is shown below. Actual maturities may differ from contractual maturities of mortgage- and asset-backed securities since the mortgages and assets underlying the securities may be called or prepaid with or without penalty. Therefore, these securities are not included in the maturity categories in the following summary (in thousands): Available-for-sale Held-to-maturity September 30, 2021: Amortized Fair Amortized Fair Due in one year or less $ 106,128 $ 106,120 $ — $ — Due in one year to five years 56,921 56,821 1,409 1,472 Due in five years to ten years 508,208 517,678 5,676 5,734 Due after ten years 1,748,950 1,765,856 982,313 1,007,201 Mortgage-backed securities 1,938,218 1,967,981 — — Asset-backed securities 220,716 220,197 — — $ 4,579,141 $ 4,634,653 $ 989,398 $ 1,014,407 At September 30, 2021 and December 31, 2020, the following investments had unrealized losses. The table below classifies these investments according to the term of the unrealized losses of less than twelve months or twelve months or longer (in thousands): Investments with an Unrealized Loss of Investments with an Unrealized Loss of Total Investments with an Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized At September 30, 2021 U.S. Treasury securities $ 132,157 $ 230 $ — $ — $ 132,157 $ 230 U.S. government agency securities 195,921 2,552 14,807 440 210,728 2,992 Mortgage-backed securities 633,938 8,630 114,968 3,270 748,906 11,900 State and municipal securities 523,859 9,138 222,884 2,961 746,743 12,099 Asset-backed securities 166,457 592 6,703 141 173,160 733 Corporate notes 18,412 422 24,970 1,545 43,382 1,967 Total temporarily-impaired securities $ 1,670,744 $ 21,564 $ 384,332 $ 8,357 $ 2,055,076 $ 29,921 At December 31, 2020 U.S. Treasury securities $ — $ — $ — $ — $ — $ — U.S. government agency securities 9,962 38 6,091 22 16,053 60 Mortgage-backed securities 165,696 1,772 35,997 555 201,693 2,327 State and municipal securities 175,115 2,220 345,435 10,264 520,550 12,484 Asset-backed securities 46,399 207 52,840 450 99,239 657 Corporate notes 9,978 40 23,920 2,269 33,898 2,309 Total temporarily-impaired securities $ 407,150 $ 4,277 $ 464,283 $ 13,560 $ 871,433 $ 17,837 The applicable dates for determining when securities were in an unrealized loss position were September 30, 2021 and December 31, 2020. As such, it is possible that a security had a market value less than its amortized cost on other days during the twelve-month pe riods ended September 30, 2021 and December 31, 2020, but is not in the "Investments with an Unrealized Loss of less t han 12 months" category above. As shown in the tables above, including both available-for-sale and held-to-maturity investment securities, at September 30, 2021, Pinnacle Financial had approximately $29.9 million in unrealized losses on approximately $2.1 billion of securities. The unrealized losses associated with $873.6 million and $179.8 million of municipal securities transferred from the available-for-sale portfolio to the held-to-maturity portfolio during the quarters ended March 31, 2020 and September 30, 2018, respectively, represent unrealized losses since the date of purchase, independent of the impact associated with changes in the cost basis upon transfer between portfolios. For any securities classified as available-for-sale that are in an unrealized loss position at the balance sheet date, Pinnacle Financial assesses whether or not it intends to sell the security, or more likely than not will be required to sell the security, before recovery of its amortized cost basis which would require a write-down to fair value through net income. Because Pinnacle Financial currently does not intend to sell those securities that have an unrealized loss at September 30, 2021, and it is not more-likely-than-not that Pinnacle Financial will be required to sell the securities before recovery of their amortized cost bases, which may be maturity, Pinnacle Financial has determined that no write-down is necessary. In addition, Pinnacle Financial evaluates whether any portion of the decline in fair value is the result of credit deterioration, which would require the recognition of an allowance for credit losses. Such evaluations consider the extent to which the amortized cost of the security exceeds its fair value, changes in credit ratings and any other known adverse conditions related to the specific security. The unrealized losses associated with securities at September 30, 2021 are driven by changes in interest rates and are not due to the credit quality of the securities, and accordingly, no allowance for credit losses is considered necessary related to available-for-sale securities at September 30, 2021. These securities will continue to be monitored as a part of Pinnacle Financial's ongoing evaluation of credit quality. Management evaluates the financial performance of the issuers on a quarterly basis to determine if it is probable that the issuers can make all contractual principal and interest payments. The allowance for credit losses on held-to-maturity securities is measured on a collective basis by major security type. At September 30, 2021, Pinnacle Financial's held-to-maturity securities consist entirely of municipal securities. The estimates of expected credit losses are based on historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. A reasonable and supportable period of 18 months and reversion period of 12 months was utilized to estimate credit losses on held-to-maturity municipal securities at each of September 30, 2021 and 2020. At September 30, 2021 and December 31, 2020, the estimated allowance for credit losses on these securities was $161,000 and $191,000, respectively, with the change driven largely by changes in macroeconomic projections. Pinnacle Financial utilizes bond credit ratings assigned by third party ratings agencies to monitor the credit quality of debt securities held-to-maturity. At September 30, 2021, all debt securities classified as held-to-maturity were rated A or higher by the ratings agencies. Updated credit ratings are obtained as they become available from the ratings agencies. Periodically, available-for-sale securities may be sold or the composition of the portfolio realigned to improve yields, quality or marketability, or to implement changes in investment or asset/liability strategy, including maintaining collateral requirements and raising funds for liquidity purposes or preparing for anticipated changes in market interest rates. Additionally, if an available-for-sale security loses its investment grade or tax-exempt status, the underlying credit support is terminated or collection otherwise becomes uncertain based on factors known to management, Pinnacle Financial will consider selling the security, but will review each security on a case-by-case basis as these factors become known. During the nine months ended September 30, 2021, $2.2 million of available-for-sale securities were sold and $270,000 related to net gains on sales of available-for-sale securities were reclassified from accumulated other comprehensive income (loss) into net income. Pinnacle Financial has entered into various fair value hedging transactions to mitigate the impact of changing interest rates on the fair values of available for sale securities. See Note 8. Derivative Instruments for disclosure of the gains and losses recognized on derivative instruments and the cumulative fair value hedging adjustments to the carrying amount of the hedged securities.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans and Allowance for Credit Losses	Note 4. Loans and Allowance for Credit Losses For financial reporting purposes, Pinnacle Financial classifies its loan portfolio based on the underlying collateral utilized to secure each loan. This classification is consistent with those utilized in the Quarterly Report of Condition and Income filed by Pinnacle Bank with the Federal Deposit Insurance Corporation (FDIC). Pinnacle Financial uses the following loan categories for presentation of loan balances and the related allowance for credit losses on loans: • Owner occupied commercial real estate mortgage loans - Owner occupied commercial real estate mortgage loans are secured by commercial office buildings, industrial buildings, warehouses or retail buildings where the owner of the building occupies the property. For such loans, repayment is largely dependent upon the operation of the borrower's business. • Non-owner occupied commercial real estate loans - These loans represent investment real estate loans secured by office buildings, industrial buildings, warehouses, retail buildings, and multifamily residential housing. Repayment is primarily dependent on lease income generated from the underlying collateral. • Consumer real estate mortgage loans - Consumer real estate mortgage consists primarily of loans secured by 1-4 family residential properties, including home equity lines of credit. Repayment is primarily dependent on the personal cash flow of the borrower. • Construction and land development loans - Construction and land development loans include loans where the repayment is dependent on the successful completion and eventual sale, refinance or operation of the related real estate project. Construction and land development loans include 1-4 family construction projects and commercial construction endeavors such as warehouses, apartments, office and retail space and land acquisition and development. • Commercial and industrial loans - Commercial and industrial loans include loans to business enterprises issued for commercial, industrial and/or other professional purposes. These loans are generally secured by equipment, inventory, and accounts receivable of the borrower and repayment is primarily dependent on business cash flows. Loans totaling $708.7 million and $1.8 billion granted under the Paycheck Protection Program are included in this category as of September 30, 2021, and December 31, 2020, respectively. • Consumer and other loans - Consumer and other loans include all loans issued to individuals not included in the consumer real estate mortgage classification. Examples of consumer and other loans are automobile loans, consumer credit cards and loans to finance education, among others. Many consumer loans are unsecured. Repayment is primarily dependent on the personal cash flow of the borrower. Loans at September 30, 2021 and December 31, 2020 were as follows: September 30, 2021 December 31, 2020 Commercial real estate: Owner occupied $ 2,954,519 $ 2,802,227 Non-owner occupied 5,219,207 5,203,384 Consumer real estate – mortgage 3,540,439 3,099,172 Construction and land development 3,096,961 2,901,746 Commercial and industrial 7,788,153 8,038,457 Consumer and other 459,182 379,515 Subtotal $ 23,058,461 $ 22,424,501 Allowance for credit losses (268,635) (285,050) Loans, net $ 22,789,826 $ 22,139,451 Commercial loans receive risk ratings assigned by a financial advisor subject to validation by Pinnacle Financial's independent loan review department. Risk ratings are categorized as pass, special mention, substandard, substandard-nonaccrual or doubtful-nonaccrual. Pass rated loans include multiple ratings categories representing varying degrees of risk attributes lesser than those of the other defined risk categories further described below. Pinnacle Financial believes its categories follow those used by Pinnacle Bank's primary regulators. At September 30, 2021, approximately 76.2% of Pinnacle Financial's loan portfolio was analyzed as a commercial loan type with a specifically assigned risk rating. Consumer loans and small business loans are generally not assigned an individual risk rating but are evaluated as either accrual or nonaccrual based on the performance of the individual loans. However, certain consumer real estate-mortgage loans and certain consumer and other loans receive a specific risk rating due to the loan proceeds being used for commercial purposes even though the collateral may be of a consumer loan nature. Consumer loans that have been placed on nonaccrual but have not otherwise been assigned a risk rating are believed by management to share risk characteristics with loans rated substandard-nonaccrual and have been presented as such in Pinnacle Financial's risk rating disclosures. Risk ratings are subject to continual review by a financial advisor and a senior credit officer. At least annually, Pinnacle Financial's credit procedures require every risk rated loan of $1.0 million or more be subject to a formal credit risk review process. Each loan's risk rating is also subject to review by Pinnacle Financial's independent loan review department, which reviews a substantial portion of Pinnacle Financial's risk rated portfolio annually. Included in the coverage are independent reviews of loans in targeted higher-risk portfolio segments such as certain commercial and industrial loans, land loans and/or loan types in certain geographies. Substantial credit risk review procedures have been performed to assess the impacts of the COVID-19 pandemic on the loan portfolio, and the results of these procedures are reflected in Pinnacle Financial's risk rating disclosures as of September 30, 2021. Following are the definitions of the risk rating categories used by Pinnacle Financial. Pass rated loans include all credits other than those included within these categories: • Special mention loans have potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in Pinnacle Financial's credit position at some future date. • Substandard loans are inadequately protected by the current net worth and financial capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize collection of the debt. Substandard loans are characterized by the distinct possibility that Pinnacle Financial could sustain some loss if the deficiencies are not corrected. • Substandard-nonaccrual loans are substandard loans that have been placed on nonaccrual status. • Doubtful-nonaccrual loans have all the characteristics of substandard-nonaccrual loans with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The table below presents loan balances classified within each risk rating category by primary loan type and based on year of origination or most recent renewal as of September 30, 2021 (in thousands): September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Commercial real estate - Owner occupied Pass $ 709,613 $ 752,522 $ 396,290 $ 346,730 $ 230,544 $ 338,358 $ 74,332 $ 2,848,389 Special Mention 3,021 18,041 23,304 11,191 8,013 5,408 1,463 70,441 Substandard (1) 4,065 9,243 5,929 2,010 6,062 1,843 4,403 33,555 Substandard-nonaccrual 651 167 133 224 573 322 64 2,134 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - owner occupied $ 717,350 $ 779,973 $ 425,656 $ 360,155 $ 245,192 $ 345,931 $ 80,262 $ 2,954,519 Commercial real estate - Non-owner occupied Pass $ 1,224,463 $ 1,011,088 $ 878,712 $ 458,453 $ 409,687 $ 527,093 $ 71,142 $ 4,580,638 Special Mention 102,390 339,589 58,766 28,326 55,434 28,615 35 613,155 Substandard (1) 3,523 10,582 1,372 2,992 1,698 3,346 — 23,513 Substandard-nonaccrual — 3 95 635 — 1,168 — 1,901 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - Non-owner occupied $ 1,330,376 $ 1,361,262 $ 938,945 $ 490,406 $ 466,819 $ 560,222 $ 71,177 $ 5,219,207 Consumer real estate – mortgage Pass $ 954,840 $ 621,396 $ 344,081 $ 218,698 $ 118,796 $ 309,150 $ 946,762 $ 3,513,723 Special Mention 120 — — 697 64 977 — 1,858 Substandard (1) — 881 — — 449 1,834 2,886 6,050 Substandard-nonaccrual 289 412 3,722 766 971 10,374 2,274 18,808 Doubtful-nonaccrual — — — — — — — — Total Consumer real estate – mortgage $ 955,249 $ 622,689 $ 347,803 $ 220,161 $ 120,280 $ 322,335 $ 951,922 $ 3,540,439 Construction and land development Pass $ 1,148,364 $ 982,922 $ 710,816 $ 180,189 $ 26,367 $ 15,867 $ 15,876 $ 3,080,401 Special Mention 2,877 3,280 8,653 — — — — 14,810 Substandard (1) — — 12 20 — 74 — 106 Substandard-nonaccrual — 866 517 59 66 136 — 1,644 Doubtful-nonaccrual — — — — — — — — Total Construction and land development $ 1,151,241 $ 987,068 $ 719,998 $ 180,268 $ 26,433 $ 16,077 $ 15,876 $ 3,096,961 Commercial and industrial Pass $ 2,566,847 $ 1,046,415 $ 675,802 $ 328,921 $ 124,091 $ 139,904 $ 2,682,244 $ 7,564,224 Special Mention 8,889 15,797 54,965 7,304 724 1,197 36,853 125,729 Substandard (1) 23,211 642 5,852 2,380 4,505 2,324 37,103 76,017 Substandard-nonaccrual 4,231 12,869 549 475 250 391 3,418 22,183 Doubtful-nonaccrual — — — — — — — — Total Commercial and industrial $ 2,603,178 $ 1,075,723 $ 737,168 $ 339,080 $ 129,570 $ 143,816 $ 2,759,618 $ 7,788,153 Consumer and other Pass $ 168,925 $ 94,798 $ 7,670 $ 2,687 $ 2,909 $ 2,058 $ 180,113 $ 459,160 Special Mention — — — — — — — — Substandard (1) — — — — — — — — Substandard-nonaccrual — — — — 18 1 3 22 Doubtful-nonaccrual — — — — — — — — Total Consumer and other $ 168,925 $ 94,798 $ 7,670 $ 2,687 $ 2,927 $ 2,059 $ 180,116 $ 459,182 Total loans Pass $ 6,773,052 $ 4,509,141 $ 3,013,371 $ 1,535,678 $ 912,394 $ 1,332,430 $ 3,970,469 $ 22,046,535 Special Mention 117,297 376,707 145,688 47,518 64,235 36,197 38,351 825,993 Substandard (1) 30,799 21,348 13,165 7,402 12,714 9,421 44,392 139,241 Substandard-nonaccrual 5,171 14,317 5,016 2,159 1,878 12,392 5,759 46,692 September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Doubtful-nonaccrual — — — — — — — — Total loans $ 6,926,319 $ 4,921,513 $ 3,177,240 $ 1,592,757 $ 991,221 $ 1,390,440 $ 4,058,971 $ 23,058,461 (1) Potential problem loans represent those loans with a well-defined weakness and where information about possible credit problems of borrowers has caused management to have doubts about the borrower's ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by Pinnacle Bank's primary regulators for loans classified as substandard, excluding troubled debt restructurings. Potential problem loans, which are not included in nonaccrual loans, amounted to approximately $139.2 million at September 30, 2021, compared to $173.5 million at December 31, 2020. The table below presents the aging of past due balances by loan segment at September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 30-59 days past due 60-89 days past due 90 days or more past due Total Current Total loans Commercial real estate: Owner occupied $ 2,519 $ — $ 1,618 $ 4,137 $ 2,950,382 $ 2,954,519 Non-owner occupied 3,375 359 1,317 5,051 5,214,156 5,219,207 Consumer real estate – mortgage 2,593 7,599 5,265 15,457 3,524,982 3,540,439 Construction and land development 776 645 648 2,069 3,094,892 3,096,961 Commercial and industrial 3,410 5,302 4,557 13,269 7,774,884 7,788,153 Consumer and other 1,376 696 247 2,319 456,863 459,182 Total $ 14,049 $ 14,601 $ 13,652 $ 42,302 $ 23,016,159 $ 23,058,461 December 31, 2020 Commercial real estate: Owner occupied $ 934 $ 2,672 $ 1,860 $ 5,466 $ 2,796,761 $ 2,802,227 Non-owner occupied 726 6,220 3,861 10,807 5,192,577 5,203,384 Consumer real estate – mortgage 8,859 328 6,274 15,461 3,083,711 3,099,172 Construction and land development 278 418 736 1,432 2,900,314 2,901,746 Commercial and industrial 20,278 5,801 4,408 30,487 8,007,970 8,038,457 Consumer and other 806 282 304 1,392 378,123 379,515 Total $ 31,881 $ 15,721 $ 17,443 $ 65,045 $ 22,359,456 $ 22,424,501 The following table details the changes in the allowance for credit losses for the three and nine months ended September 30, 2021 and 2020, respectively, by loan classification (in thousands): Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Three months ended September 30, 2021: Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Charged-off loans (543) (201) (94) — (10,167) (1,284) — (12,289) Recovery of previously charged-off loans 80 326 777 32 997 796 — 3,008 Provision for credit losses on loans 411 (5,180) (103) (659) 8,485 1,215 — 4,169 Balance at September 30, 2021 $ 19,259 $ 74,026 $ 31,025 $ 32,860 $ 101,416 $ 10,049 $ — $ 268,635 Three months ended September 30, 2020: Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372 Charged-off loans (186) (222) (907) — (12,984) (730) — (15,029) Recovery of previously charged-off loans 47 432 297 7 799 391 — 1,973 Provision for credit losses on loans (2,238) 1,223 3,201 (682) 13,783 1,042 — 16,329 Balance at September 30, 2020 $ 36,426 $ 69,859 $ 31,949 $ 41,222 $ 102,208 $ 6,981 $ — $ 288,645 Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Nine months ended September 30, 2021: Balance at December 31, 2020 $ 23,298 $ 79,132 $ 33,304 $ 42,408 $ 98,423 $ 8,485 $ — $ 285,050 Charged-off loans (1,246) (672) (626) (367) (32,890) (3,518) — (39,319) Recovery of previously charged-off loans 1,158 486 1,690 269 2,848 2,222 — 8,673 Provision for credit losses on loans (3,951) (4,920) (3,343) (9,450) 33,035 2,860 — 14,231 Balance at September 30, 2021 $ 19,259 $ 74,026 $ 31,025 $ 32,860 $ 101,416 $ 10,049 $ — $ 268,635 Nine months ended September 30, 2020: Balance at December 31, 2019 $ 13,406 $ 19,963 $ 8,054 $ 12,662 $ 36,112 $ 3,595 $ 985 $ 94,777 Impact of adopting ASC 326 264 (4,740) 21,029 (3,144) 23,040 2,638 (985) 38,102 Charged-off loans (1,247) (485) (3,033) — (27,982) (2,977) — (35,724) Recovery of previously charged-off loans 272 631 971 100 3,798 1,356 — 7,128 Provision for credit losses on loans 23,731 54,490 4,928 31,604 67,240 2,369 — 184,362 Balance at September 30, 2020 $ 36,426 $ 69,859 $ 31,949 $ 41,222 $ 102,208 $ 6,981 $ — $ 288,645 The adequacy of the allowance for credit losses is reviewed by Pinnacle Financial's management on a quarterly basis. This assessment includes procedures to estimate the allowance and test the adequacy and appropriateness of the resulting balance. The level of the allowance is based upon management's evaluation of historical default and loss experience, current and projected economic conditions, asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect the borrowers' ability to repay the loan (including the timing of future payment), the estimated value of any underlying collateral, composition of the loan portfolio, industry and peer bank loan quality indications and other pertinent factors, including regulatory recommendations. The level of the allowance for credit losses maintained by management is believed adequate to absorb all expected future losses inherent in the loan portfolio at the balance sheet date. The allowance is increased by provisions charged to expense and decreased by charge-offs, net of recoveries of amounts previously charged-off. Pinnacle Financial adopted ASU 2016-13 on January 1, 2020, which introduced the CECL methodology for estimating all expected losses over the life of a financial asset. Under the CECL methodology the allowance for credit losses is measured on a collective basis for pools of loans with similar risk characteristics, and for loans that do not share similar risk characteristics with the collectively evaluated pools, evaluations are performed on an individual basis. Upon adoption of ASU 2016-13 in 2020, the opening balance of the allowance for credit losses was increased by $38.1 million through retained earnings. For commercial real estate, consumer real estate, construction and land development, and commercial and industrial loans, Pinnacle Financial primarily utilizes a probability of default and loss given default modeling approach. These models utilize historical correlations between default experience and certain macroeconomic factors as determined through a statistical regression analysis. All loan segments modeled using this approach consider changes in the national unemployment rate. In addition to the national unemployment rate, GDP and the three month treasury rate are considered for owner occupied commercial real estate, the commercial real estate price index and the five year treasury rate are considered for construction loans, and the three month treasury rate is considered for commercial and industrial loans. For the consumer and other loan segment, a non-statistical approach based on historical charge off rates is utilized. Losses are predicted over a period of time determined to be reasonable and supportable, and at the end of the reasonable and supportable period losses are reverted to long term historical averages. The reasonable and supportable period and reversion period are re-evaluated each quarter by Pinnacle Financial and are dependent on the current economic environment among other factors. A reasonable and supportable period of 24 months was utilized for all loan segments at September 30, 2021 and 18 months was utilized for all loan segments at December 31, 2020, followed by a 12 month straight line reversion to long term averages at each measurement date. The estimated loan losses for all loan segments are adjusted for changes in qualitative factors not inherently considered in the quantitative analyses. These adjustments are based upon quarterly trend assessments in portfolio concentrations, policy exceptions, associate retention, independent loan review results, collateral considerations, risk ratings, competition and peer group credit quality trends. The qualitative allowance allocation, as determined by the processes noted above, is increased or decreased for each loan segment based on the assessment of these various qualitative factors. Loans that do not share similar risk characteristics with the collectively evaluated pools are evaluated on an individual basis and are excluded from the collectively evaluated pools. Individual evaluations are generally performed for loans greater than $1.0 million which have experienced significant credit deterioration. Such loans are evaluated for credit losses based on either discounted cash flows or the fair value of collateral. The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses, as of September 30, 2021 and December 31, 2020 (in thousands): Real Estate Business Assets Other Total September 30, 2021 Commercial real estate: Owner occupied $ 5,517 $ — $ — $ 5,517 Non-owner occupied 6,039 — — 6,039 Consumer real estate – mortgage 23,530 — — 23,530 Construction and land development 2,632 — — 2,632 Commercial and industrial — 11,443 838 12,281 Consumer and other — — 19 19 Total $ 37,718 $ 11,443 $ 857 $ 50,018 December 31, 2020 Commercial real estate: Owner occupied $ 15,681 $ — $ — $ 15,681 Non-owner occupied 7,000 — — 7,000 Consumer real estate – mortgage 27,082 — — 27,082 Construction and land development 2,049 — — 2,049 Commercial and industrial — 22,437 39 22,476 Consumer and other — — 4 4 Total $ 51,812 $ 22,437 $ 43 $ 74,292 The table below presents the amortized cost basis of loans on nonaccrual status and loans past due 90 or more days and still accruing interest at September 30, 2021 and December 31, 2020. Also presented is the balance of loans on nonaccrual status at September 30, 2021 for which there was no related allowance for credit losses recorded (in thousands): September 30, 2021 December 31, 2020 Total nonaccrual loans Nonaccrual loans with no allowance for credit losses Loans past due 90 or more days and still accruing Total nonaccrual loans Nonaccrual loans with no allowance for credit losses Loans past due 90 or more days and still accruing Commercial real estate: Owner occupied $ 2,134 $ — $ 306 $ 10,231 $ 5,985 $ — Non-owner occupied 1,901 — — 5,219 1,522 — Consumer real estate – mortgage 18,808 — 549 22,191 — 273 Construction and land development 1,645 — — 1,953 — — Commercial and industrial 22,182 17,538 812 34,238 29,030 1,785 Consumer and other 22 — 247 4 — 304 Total $ 46,692 $ 17,538 $ 1,914 $ 73,836 $ 36,537 $ 2,362 Pinnacle Financial's policy is the accrual of interest income will be discontinued when (1) there is a significant deterioration in the financial condition of the borrower and full repayment of principal and interest is not expected or (2) the principal or interest is more than 90 days past due, unless the loan is both well secured and in the process of collection. As such, at the date loans are placed on nonaccrual status, Pinnacle Financial reverses all previously accrued interest income against current year earnings. Pinnacle Financial's policy is once a loan is placed on nonaccrual status each subsequent payment is reviewed on a case-by-case basis to determine if the payment should be applied to interest or principal pursuant to regulatory guidelines. Pinnacle Financial recognized no interest income from cash payments received on nonaccrual loans during the three and nine months ended September 30, 2021 and 2020, respectively. Had these loans been on accruing status, an additional $689,000 and $2.1 million of interest income would have been recognized for the three and nine months ended September 30, 2021 compared to an additional $910,000 and $2.1 million for the three and nine months ended September 30, 2020, respectively. Approximately $26.0 million and $51.7 million of nonaccrual loans were performing pursuant to their contractual terms as of September 30, 2021 and December 31, 2020, respectively. At September 30, 2021 and December 31, 2020, there were $2.4 million and $2.5 million, respectively, of troubled debt restructurings that were performing as of their restructure date and which were accruing interest. Troubled commercial loans are restructured by specialists within Pinnacle Bank's Special Assets Group, and all restructurings are approved by committees and/or credit officers separate and apart from the normal loan approval process. These specialists are charged with reducing Pinnacle Financial's overall risk and exposure to loss in the event of a restructuring by obtaining some or all of the following: improved documentation, additional guaranties, increase in curtailments, reduction in collateral release terms, additional collateral or other similar strategies. There were no troubled debt restructurings made during the three and nine months ended September 30, 2021. During the nine months ended September 30, 2021 and 2020, there were no troubled debt restructurings that subsequently defaulted within twelve months of the restructuring. The following table outlines the amount of each loan category where troubled debt restructurings were made during the nine months ended September 30, 2020 (in thousands): September 30, 2020 Number Pre Modification Outstanding Recorded Investment Post Modification Outstanding Recorded Investment, net of related allowance Consumer real estate – mortgage 1 $ 807 $ 807 Pinnacle Financial analyzes its commercial loan portfolio to determine if a concentration of credit risk exists to any industries. Pinnacle Financial utilizes broadly accepted industry classification systems in order to classify borrowers into various industry classifications. Pinnacle Financial has a credit exposure (loans outstanding plus unfunded lines of credit) exceeding 25% of Pinnacle Bank's total risk-based capital to borrowers in the following industries at September 30, 2021 with the comparative exposures for December 31, 2020 (in thousands): September 30, 2021 Outstanding Principal Balances Unfunded Commitments Total exposure Total Exposure at December 31, 2020 Lessors of nonresidential buildings $ 3,694,063 $ 1,366,385 $ 5,060,448 $ 4,442,712 Lessors of residential buildings 1,377,334 923,992 2,301,326 2,126,246 Hotels (except Casino Hotels) and Motels 936,734 53,999 990,733 1,039,259 New Housing For-Sale Builders 542,968 893,927 1,436,895 1,124,302 Pinnacle Financial monitors two ratios regarding construction and commercial real estate lending as part of its concentration management processes. Both ratios are calculated by dividing certain types of loan balances for each of the two categories by Pinnacle Bank’s total risk-based capital. At September 30, 2021 and December 31, 2020, Pinnacle Bank’s construction and land development loans as a percentage of total risk-based capital were 89.3% and 89.0%, respectively. Non-owner occupied commercial real estate and multifamily loans (including construction and land development loans) as a percentage of total risk-based capital were 252.4% and 264.0% as of September 30, 2021 and December 31, 2020, respectively. Banking regulations have established guidelines for the construction ratio of less than 100% of total risk-based capital and for the non-owner occupied ratio of less than 300% of total risk-based capital. When a bank’s ratios are in excess of one or both of these guidelines, banking regulations generally require an increased level of monitoring in these lending areas by bank management. At September 30, 2021, Pinnacle Bank was within the 100% and 300% guidelines and has established what it believes to be appropriate controls to monitor its lending in these areas as it aims to keep the level of these loans below the 100% and 300% thresholds. At September 30, 2021, Pinnacle Bank had granted loans and other extensions of credit amounting to approximately $9.5 million to current directors, executive officers, and their related interests, of which $6.0 million had been drawn upon. At December 31, 2020, Pinnacle Bank had granted loans and other extensions of credit amounting to approximately $10.7 million to directors, executive officers, and their related interests, of which approximately $6.8 million had been drawn upon. All loans to directors, executive officers, and their related interests were performing in accordance with contractual terms at September 30, 2021 and December 31, 2020. Loans Held for Sale At September 30, 2021, Pinnacle Financial had approximately $49.1 million in commercial loans held for sale compared to $31.2 million at December 31, 2020, which primarily included commercial real estate and apartment loans originated for sale to a third-party as part of a multi-family loan program. Such loans are closed under a pass-through commitment structure wherein Pinnacle Bank's loan commitment to the borrower is the same as the third party's take-out commitment to Pinnacle Bank and the third party purchase typically occurs within thirty days of Pinnacle Bank closing with the borrowers. At September 30, 2021, Pinnacle Financial had approximately $42.0 million of mortgage loans held-for-sale compared to approximately $67.8 million at December 31, 2020. Total loan volumes sold during the nine months ended September 30, 2021 and September 30, 2020 were approximately $1.3 billion. During the three and nine months ended September 30, 2021, Pinnacle Financial recognized $7.8 million and $28.2 million, respectively, in gains on the sale of these loans, net of commissions paid, compared to $19.5 million and $47.7 million, respectively, during the three and nine months ended September 30, 2020. These residential mortgage loans held-for-sale are originated internally and are primarily to borrowers in Pinnacle Bank's geographic markets. These sales are typically on a mandatory basis to investors that follow conventional government sponsored entities (GSE) and the Department of Housing and Urban Development/U.S. Department of Veterans Affairs (HUD/VA) guidelines. Each purchaser of a residential mortgage loan held-for-sale has specific guidelines and criteria for sellers of loans and the risk of credit loss with regard to the principal amount of the loans sold is generally transferred to the purchasers upon sale. While the loans are sold without recourse, the purchase agreements require Pinnacle Bank to make certain representations and warranties regarding the existence and sufficiency of file documentation and the absence of fraud by borrowers or other third parties such as appraisers in connection with obtaining the loan. If it is determined that the loans sold were in breach of these representations or warranties, Pinnacle Bank has obligations to either repurchase the loan for the unpaid principal balance and related investor fees or make the purchaser whole for the economic benefits of the loan. To date, Pinnacle Bank's liability pursuant to the terms of these representations and warranties has been insignificant to Pinnacle Bank.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes ASC 740, Income Taxes , defines the threshold for recognizing the benefits of tax return positions in the financial statements as "more-likely-than-not" to be sustained by the taxing authority. This section also provides guidance on the derecognition, measurement and classification of income tax uncertainties, along with any related interest and penalties, and includes guidance concerning accounting for income tax uncertainties in interim periods. The unrecognized tax benefit related to uncertain tax positions related to state income tax filings was $9.7 million at September 30, 2021 and December 31, 2020, respectively. No change was recorded to the unrecognized tax benefit related to uncertain tax positions in each of the three and nine month periods ended September 30, 2021 and 2020. Pinnacle Financial's policy is to recognize interest and/or penalties related to income tax matters in income tax expense. For both the three and nine months ended September 30, 2021 and 2020, respectively, there were no interest and penalties recorded in the income statement. Pinnacle Financial's effective tax rate for the three and nine months ended September 30, 2021 was 19.4% and 18.9%, respectively, compared to 19.3% and 15.2%, respectively, for the three and nine months ended September 30, 2020. The difference between the effective tax rate and the federal and state income tax statutory rate of 26.14% at September 30, 2021 and 2020 is primarily due to investments in bank qualified municipal securities, tax benefits of Pinnacle Bank's real estate investment trust subsidiary, participation in the Tennessee Community Investment Tax Credit (CITC) program, and tax benefits associated with share-based compensation, bank-owned life insurance and Pinnacle Financial's captive insurance subsidiary, offset in part by the limitation on deductibility of meals and entertainment expense, non-deductible FDIC premiums and non-deductible executive compensation.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 6. Commitments and Contingent Liabilities In the normal course of business, Pinnacle Financial has entered into off-balance sheet financial instruments which include commitments to extend credit (i.e., including unfunded lines of credit) and standby letters of credit. Commitments to extend credit are usually the result of lines of credit granted to existing borrowers under agreements that the total outstanding indebtedness will not exceed a specific amount during the term of the indebtedness. Typical borrowers are commercial concerns that use lines of credit to supplement their treasury management functions, thus their total outstanding indebtedness may fluctuate during any time period based on the seasonality of their business and the resultant timing of their cash flows. Other typical lines of credit are related to home equity loans granted to consumers. Commitments to extend credit generally have fixed expiration dates or other termination clauses and may require payment of a fee. At September 30, 2021, these commitments amounted to $11.4 billion, of which approximately $1.3 billion related to home equity lines of credit. Standby letters of credit are generally issued on behalf of an applicant (customer) to a specifically named beneficiary and are the result of a particular business arrangement that exists between the applicant and the beneficiary. Standby letters of credit have fixed expiration dates and are usually for terms of two years or less unless terminated beforehand due to criteria specified in the standby letter of credit. A typical arrangement involves the applicant routinely being indebted to the beneficiary for such items as inventory purchases, insurance, utilities, lease guarantees or other third party commercial transactions. The standby letter of credit would permit the beneficiary to obtain payment from Pinnacle Financial under certain prescribed circumstances. Subsequently, Pinnacle Financial would then seek reimbursement from the applicant pursuant to the terms of the standby letter of credit. At September 30, 2021, these commitments amounted to $242.3 million. Pinnacle Financial typically follows the same credit policies and underwriting practices when making these commitments as it does for on-balance sheet instruments. Each customer's creditworthiness is typically evaluated on a case-by-case basis, and the amount of collateral obtained, if any, is based on management's credit evaluation of the customer. Collateral held varies but may include cash, real estate and improvements, marketable securities, accounts receivable, inventory, equipment and personal property. The contractual amounts of these commitments are not reflected in the consolidated financial statements and only amounts drawn upon would be reflected in the future. Since many of the commitments are expected to expire without being drawn upon, the contractual amounts do not necessarily represent future cash requirements. However, should the commitments be drawn upon and should Pinnacle Bank's customers default on their resulting obligation to Pinnacle Bank, the maximum exposure to credit loss, without consideration of collateral, is represented by the contractual amount of those commitments. At September 30, 2021 and December 31, 2020, Pinnacle Financial had accrued $22.5 million and $23.2 million, respectively, for the inherent risks associated with these off-balance sheet commitments. Various legal claims also arise from time to time in the normal course of business. In the opinion of management, the resolutions of these claims outstanding at September 30, 2021 are not expected to have a material adverse impact on Pinnacle Financial's consolidated financial condition, operating results or cash flows.

Stock Options and Restricted Sh

Stock Options and Restricted Shares	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock Options and Restricted Shares	Note 7. Stock Options and Restricted Shares Pinnacle Financial's Amended and Restated 2018 Omnibus Equity Incentive Plan (the "2018 Plan") permits Pinnacle Financial to reissue outstanding awards that are subsequently forfeited, settled in cash, withheld by Pinnacle Financial to cover withholding taxes or expire unexercised and returned to the 2018 Plan. At September 30, 2021, there were approximately 1.9 million shares available for issuance under the 2018 Plan. Upon the acquisition of CapitalMark, Pinnacle Financial assumed approximately 858,000 stock options under the CapitalMark Option Plan. No further awards remain available for issuance under the CapitalMark Option Plan. At September 30, 2021, all of the options remaining outstanding under any equity incentive plan of Pinnacle Financial were granted under the CapitalMark Option Plan. Common Stock Options A summary of the stock option activity within the equity incentive plans during the nine months ended September 30, 2021 and information regarding, contractual terms remaining, intrinsic values and other matters is as follows: Number Weighted-Average Weighted-Average Aggregate Outstanding at December 31, 2020 101,769 $ 23.46 1.86 $ 4,169 (1) Granted — Exercised (31,451) Forfeited (497) Outstanding at September 30, 2021 69,821 $ 23.97 1.28 $ 4,895 (2) Options exercisable at September 30, 2021 69,821 $ 23.97 1.28 $ 4,895 (2) (1) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $64.40 per common share at December 31, 2020 for the 101,769 options that were in-the-money at December 31, 2020. (2) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $94.08 per common share at September 30, 2021 for the 69,821 options that were in-the-money at September 30, 2021. Compensation costs related to stock options granted under Pinnacle Financial's equity incentive plans have been fully recognized and all outstanding option awards are fully vested. Restricted Share Awards A summary of activity for unvested restricted share awards for the nine months ended September 30, 2021 is as follows: Number Grant Date Unvested at December 31, 2020 594,669 $ 56.97 Shares awarded 225,481 Restrictions lapsed and shares released to associates/directors (179,410) Shares forfeited (30,912) Unvested at September 30, 2021 609,828 $ 63.35 Pinnacle Financial has granted restricted share awards to associates and outside directors with a time-based vesting criteria. Compensation expense associated with time-based vesting restricted share awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock grants that were made, grouped by similar vesting criteria, during the nine months ended September 30, 2021. The table reflects the life-to-date activity for these awards: Grant Group (1) Vesting Shares Restrictions lapsed and shares released to participants Shares withheld for taxes by participants Shares forfeited by participants (4) Shares unvested Time Based Awards 2021 Associates (2) 3 - 5 213,651 139 92 11,248 202,172 Outside Director Awards (3) 2021 Outside directors 1 11,830 — — — 11,830 (1) Groups include employees (referred to as associates above) and outside directors. When the restricted shares are awarded, a participant receives voting rights and forfeitable dividend rights with respect to the shares, but is not able to transfer the shares until the restrictions have lapsed. Once the restrictions lapse, the participant is taxed on the value of the award and may elect to sell some shares (or have Pinnacle Financial withhold some shares) to pay the applicable income taxes associated with the award. Alternatively, the recipient can pay the withholding taxes in cash. For time-based vesting restricted share awards, dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination. For awards to Pinnacle Financial's directors, dividends are placed into escrow until the forfeiture restrictions on such shares lapse. (2) The forfeiture restrictions on these restricted share awards lapse in equal annual installments on the anniversary date of the grant. (3) Restricted share awards are issued to the outside members of the board of directors in accordance with their board compensation plan. Restrictions lapse on March 1, 2022 based on each individual board member meeting attendance goals for the various board and board committee meetings to which each member was scheduled to attend. (4) These shares represent forfeitures resulting from recipients whose employment or board membership was terminated during the year-to-date period ended September 30, 2021. Any dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination or will not be distributed from escrow, as applicable. Restricted Stock Unit Awards In 2021, Pinnacle Financial granted restricted stock units to its Named Executive Officers (NEOs) and leadership team members with time-based vesting criteria. Compensation expense associated with time-based vesting restricted stock unit awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock unit grants that were made, grouped by similar vesting criteria, during the nine months ended September 30, 2021. The table reflects the life-to-date activity for these awards: Grant year Vesting Shares Restrictions lapsed and shares released to participants Shares withheld for taxes by participants Shares forfeited by participants (1) Shares unvested 2021 3 56,864 89 39 368 56,368 (1) These shares represent forfeitures resulting from recipients whose employment was terminated during the year-to-date period ended September 30, 2021. Dividend equivalents are held in escrow for award recipients for dividends paid prior to the forfeiture restrictions lapsing. Such dividend equivalents are not released from escrow if an award is forfeited. Performance Stock Unit Awards The following table details the performance stock unit awards outstanding at September 30, 2021: Units Awarded Grant year NEOs (1) Leadership Team other than NEOs Applicable performance periods associated with each tranche Service period per tranche Subsequent holding period per tranche Period in which units to be settled into shares of common stock (2) 2021 (3) 89,234 — 214,155 45,240 2021-2023 0 0 2024 2020 136,137 — 204,220 59,648 2020 2 3 2025 2021 2 2 2025 2022 2 1 2025 2019 166,211 — 249,343 52,244 2019 2 3 2024 2020 2 2 2024 2021 2 1 2024 2018 96,878 — 145,339 25,990 2018 2 3 2023 2019 2 2 2023 2020 2 1 2023 2017 72,537 — 109,339 24,916 2017 2 3 2022 2018 2 2 2022 2019 2 1 2022 (1) The named executive officers are awarded a range of awards that may be earned based on attainment of goals between a target level of performance and a maximum level of performance. (2) Performance stock unit awards granted prior to 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the periods noted in the table, if Pinnacle Bank's ratio of non-performing assets to its loans plus ORE is less than amounts established in the applicable award agreement. (3) Performance stock unit awards granted in 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the period noted in the table, if the performance criterion included in the applicable performance unit award agreement are met. During the nine months ended September 30, 2021 and 2020, the restrictions associated with 134,274 and 129,723 performance stock unit awards granted in prior years lapsed, based on the terms of the agreement and approval by Pinnacle Financial's Human Resources and Compensation Committee, and were settled into shares of Pinnacle Financial common stock with 46,655 and 43,996 shares being withheld to pay the taxes associated with the settlement of those shares. Additionally, during the nine months ended September 30, 2021, 199,633 performance stock unit awards granted in prior years were forfeited due to the failure to reach performance targets for the year ended December 31, 2020 as defined in the associated performance stock unit award agreements. Stock compensation expense related to restricted share awards, restricted stock unit awards and performance stock unit awards for the three and nine months ended September 30, 2021 was $6.8 million and $17.8 million, respectively, compared to $4.4 million and $14.1 million, respectively, for the three and nine months ended September 30, 2020. As of September 30, 2021, the total compensation cost related to unvested restricted share awards, restricted stock unit awards and performance stock unit awards not yet recognized was $52.9 million. This expense, if the underlying units are earned, is expected to be recognized over a weighted-average period of 1.85 years.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 8. Derivative Instruments Financial derivatives are reported at fair value in other assets or other liabilities. The accounting for changes in the fair value of a derivative depends on whether it has been designated and qualifies as part of a hedging relationship and classification as either a cash flow hedge or fair value hedge for those derivatives which are designated as part of a hedging relationship. Non-hedge derivatives For derivatives not designated as hedges, the gain or loss is recognized in current period earnings. Pinnacle Financial enters into interest rate swaps (swaps) to facilitate customer transactions and meet their financing needs. Upon entering into these instruments to meet customer needs, Pinnacle Financial enters into offsetting positions in order to minimize the risk to Pinnacle Financial. These swaps qualify as derivatives, but are not designated as hedging instruments. The income statement impact of the offsetting positions is limited to changes in the reserve for counterparty credit risk. A summary of Pinnacle Financial's interest rate swaps to facilitate customers' transactions as of September 30, 2021 and December 31, 2020 is included in the following table (in thousands): September 30, 2021 December 31, 2020 Notional Estimated Notional Estimated Interest rate swap agreements: Assets $ 1,634,589 $ 56,797 $ 1,565,916 $ 101,602 Liabilities 1,634,589 (57,487) 1,565,916 (102,919) Total $ 3,269,178 $ (690) $ 3,131,832 $ (1,317) The effects of Pinnacle Financial's interest rate swaps to facilitate customers' transactions on the income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Amount of Gain (Loss) Recognized in Income Location of Loss Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest rate swap agreements Other noninterest income $ 126 $ (135) $ 627 $ (1,272) Derivatives designated as cash flow hedges For derivative instruments that are designated and qualify as a cash flow hedge, the aggregate fair value of the derivative instrument is recorded in other assets or other liabilities with any gain or loss related to changes in fair value recorded in accumulated other comprehensive income (loss), net of tax. The gain or loss is reclassified into earnings in the same period during which the hedged asset or liability affects earnings and is presented in the same income statement line item as the earnings effect of the hedged asset or liability. Pinnacle Financial uses forward cash flow hedge relationships in an effort to manage future interest rate exposure. A summary of Pinnacle Financial's cash flow hedge relationships as of September 30, 2021 and December 31, 2020 is as follows (in thousands): September 30, 2021 December 31, 2020 Balance Sheet Location Notional Estimated Notional Estimated Asset derivatives Interest rate floor Other assets $ — $ — $ 1,500,000 $ 124,585 The effects of Pinnacle Financial's cash flow hedge relationships on the statement of comprehensive income (loss) during the three and nine months ended September 30, 2021 and 2020 were as follows, net of tax (in thousands): Amount of Gain (Loss) Recognized Three Months Ended September 30, Nine Months Ended September 30, Asset derivatives 2021 2020 2021 2020 Interest rate floor - loans $ — $ (3,506) $ (15,034) $ 68,161 Liability derivatives Interest rate swaps - borrowings $ — $ 480 $ — $ (959) $ — $ (3,026) $ (15,034) $ 67,202 The cash flow hedges were determined to be highly effective during the periods presented and as a result qualify for hedge accounting treatment. If a hedge was deemed to be ineffective, the amount included in accumulated other comprehensive income (loss) would be reclassified into a line item within the statement of income that impacts operating results. The hedge would no longer be considered effective if a portion of the hedge becomes ineffective, the item hedged is no longer in existence or Pinnacle Financial discontinues hedge accounting. Gains on cash flow hedges totaling $4.3 million and $6.5 million, net of tax, were reclassified from accumulated other comprehensive income (loss) into net income during the three and nine months ended September 30, 2021, respectively, compared to losses totaling $156,000 and $1.9 million, net of tax, during the three and nine months ended September 30, 2020, respectively. During the second quarter of 2021, loan interest rate floors with a notional amount totaling $1.5 billion and unrealized gains totaling $34.3 million, net of tax, were terminated. These unrealized gains are being amortized into income on a straight line basis through November 2024. Approximately $10.6 million in unrealized gains, net of tax, are expected to be reclassified from accumulated other comprehensive income (loss) into net income over the next twelve months related to previously terminated cash flow hedges. Derivatives designated as fair value hedges For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged asset or liability attributable to the hedged risk are recognized in current earnings. The gain or loss on the derivative instrument is presented on the same income statement line item as the earnings effect of the hedged item. Pinnacle Financial utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of fixed rate callable available-for-sale securities. The hedging strategy converts the fixed interest rates to variable interest rates based on LIBOR or federal funds rates. These derivatives are designated as partial term hedges of selected cash flows covering specified periods of time prior to the call dates of the hedged securities. A summary of Pinnacle Financial's fair value hedge relationships as of September 30, 2021 and December 31, 2020 is as follows (in thousands): September 30, 2021 December 31, 2020 Balance Sheet Location Weighted Average Remaining Maturity (In Years) Weighted Average Pay Rate Receive Rate Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Asset derivatives Interest rate swaps - securities Other assets 5.66 0.54% Federal Funds $ 464,762 $ 11,989 $ 231,421 $ 4,696 Liability derivatives Interest rate swaps - securities Other liabilities 5.15 2.71% 3 month LIBOR/Federal Funds $ 566,728 $ (48,779) $ 477,510 $ (72,010) $ 1,031,490 $ (36,790) $ 708,931 $ (67,314) Notional amounts of $477.5 million included in the table above receive a variable rate of interest based on three month LIBOR and notional amounts totaling $554.0 million receive a variable rate of interest based on the daily compounded federal funds rate. The effects of Pinnacle Financial's securities fair value hedge relationships on the income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Location of Gain (Loss) Amount of Gain (Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest rate swaps - securities Interest income on securities $ 3,850 $ 4,996 $ 30,524 $ (36,436) Securities available-for-sale Interest income on securities $ (3,850) $ (4,996) $ (30,524) $ 36,436 The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at September 30, 2021 and December 31, 2020 (in thousands): Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Line item on the balance sheet Securities available-for-sale $ 1,198,990 $ 841,543 $ 36,790 $ 67,314 During the three and nine months ended September 30, 2021, amortization expense totaling $726,000 and $2.6 million, respectively, related to previously terminated fair value hedges was recognized as a reduction to interest income on loans compared to $1.2 million and $3.3 million during the three and nine months ended September 30, 2020, respectively.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 9. Fair Value of Financial Instruments FASB ASC 820, Fair Value Measurements and Disclosures , defines fair value, establishes a framework for measuring fair value in U.S. GAAP and expands disclosures about fair value measurements. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. Valuation Hierarchy FASB ASC 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows: • Level 1 – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 – inputs to the valuation methodology are unobservable and significant to the fair value measurement. A financial instrument's categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following is a description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. Assets Securities available-for-sale – Where quoted prices are available for identical securities in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid government securities and certain other financial products. If quoted market prices are not available, then fair values are estimated by using pricing models that use observable inputs or quoted prices of securities with similar characteristics and are classified within Level 2 of the valuation hierarchy. In certain cases where there is limited activity or less transparency around inputs to the valuation and more complex pricing models or discounted cash flows are used, securities are classified within Level 3 of the valuation hierarchy. Other investments – Included in other investments are investments recorded at fair value primarily in certain nonpublic investments and funds. The valuation of these nonpublic investments requires management judgment due to the absence of observable quoted market prices, inherent lack of liquidity and the long-term nature of such assets. These investments are valued initially based upon transaction price. The carrying values of other investments are adjusted either upwards or downwards from the transaction price to reflect expected exit values as evidenced by financing and sale transactions with third parties, or when determination of a valuation adjustment is confirmed through financial reports provided by the portfolio managers of the investment. A variety of factors are reviewed and monitored to assess positive and negative changes in valuation including, but not limited to, current operating performance and future expectations of the particular investment, industry valuations of comparable public companies and changes in market outlook and the third-party financing environment over time. In determining valuation adjustments resulting from the investment review process, emphasis is placed on current company performance and market conditions. These investments are included in Level 3 of the valuation hierarchy if the entities and funds are not widely traded and the underlying investments are in privately-held and/or start-up companies for which market values are not readily available. Certain investments in funds for which the underlying assets of the fund represent publicly traded investments are included in Level 2 of the valuation hierarchy. Other assets – Included in other assets are certain assets carried at fair value, including interest rate swap agreements to facilitate customer transactions, interest rate floors designated as cash flow hedges, and interest rate locks associated with the mortgage loan pipeline. The carrying amount of interest rate swap agreements is based on Pinnacle Financial's pricing models that utilize observable market inputs. The fair value of the cash flow hedge agreements is determined by calculating the difference between the discounted fixed rate cash flows and the discounted variable rate cash flows. The fair value of the mortgage loan pipeline is based upon the projected sales price of the underlying loans, taking into account market interest rates and other market factors at the measurement date, net of the projected fallout rate. Pinnacle Financial reflects these assets within Level 2 of the valuation hierarchy as these assets are valued using similar transactions that occur in the market. Collateral dependent loans – Collateral dependent loans are measured at the fair value of the collateral securing the loan less estimated selling costs. The fair value of real estate collateral is determined based on real estate appraisals which are generally based on recent sales of comparable properties which are then adjusted for property specific factors. Non-real estate collateral is valued based on various sources, including third party asset valuations and internally determined values based on cost adjusted for depreciation and other judgmentally determined discount factors. Collateral dependent loans are classified within Level 3 of the hierarchy due to the unobservable inputs used in determining their fair value such as collateral values and the borrower's underlying financial condition. Other real estate owned – Other real estate owned (OREO) represents real estate foreclosed upon by Pinnacle Bank through loan defaults by customers or acquired by deed in lieu of foreclosure. A significant portion of these amounts relate to lots, homes and development projects that are either completed or are in various stages of construction for which Pinnacle Financial believes it has adequate collateral. Upon foreclosure, the property is recorded at the lower of cost or fair value, based on appraised value, less selling costs estimated as of the date acquired with any loss recognized as a charge-off through the allowance for credit losses. Additional OREO losses for subsequent valuation downward adjustments are determined on a specific property basis and are included as a component of noninterest expense along with holding costs. Any gains or losses realized at the time of disposal are also reflected in noninterest expense, as applicable. OREO is included in Level 3 of the valuation hierarchy due to the lack of observable market inputs into the determination of fair value as appraisal values are property-specific and sensitive to the changes in the overall economic environment. Liabilities Other liabilities – Pinnacle Financial has certain liabilities carried at fair value including certain interest rate swap agreements to facilitate customer transactions, interest rate swaps designated as fair value and cash flow hedges, and interest rate locks associated with the funding for its mortgage loan originations. The fair value of these liabilities is based on Pinnacle Financial's pricing models that utilize observable market inputs and is reflected within Level 2 of the valuation hierarchy. The following tables present financial instruments measured at fair value on a recurring basis as of September 30, 2021 and December 31, 2020, by caption on the consolidated balance sheets and by FASB ASC 820 valuation hierarchy (as described above) (in thousands): Total carrying value in the consolidated balance sheet Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market parameters September 30, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 144,157 $ — $ 144,157 $ — U.S. government agency securities 422,055 — 422,055 — Mortgage-backed securities 1,967,981 — 1,967,981 — State and municipal securities 1,759,648 — 1,758,776 872 Agency-backed securities 220,197 — 220,197 — Corporate notes and other 120,615 — 120,615 — Total investment securities available-for-sale 4,634,653 — 4,633,781 872 Other investments 119,647 — 25,206 94,441 Other assets 73,230 — 73,230 — Total assets at fair value $ 4,827,530 $ — $ 4,732,217 $ 95,313 Other liabilities $ 105,953 $ — $ 105,953 $ — Total liabilities at fair value $ 105,953 $ — $ 105,953 $ — December 31, 2020 Investment securities available-for-sale: U.S. Treasury securities $ 82,209 $ — $ 82,209 $ — U.S. government agency securities 76,403 — 76,403 — Mortgage-backed securities 1,689,191 — 1,689,191 — State and municipal securities 1,443,363 — 1,427,866 15,497 Agency-backed securities 177,936 — 177,936 — Corporate notes and other 117,579 — 117,579 — Total investment securities available-for-sale 3,586,681 — 3,571,184 15,497 Other investments 73,395 — 25,636 47,759 Other assets 242,470 — 242,470 — Total assets at fair value $ 3,902,546 $ — $ 3,839,290 $ 63,256 Other liabilities $ 177,025 $ — $ 177,025 $ — Total liabilities at fair value $ 177,025 $ — $ 177,025 $ — The following table presents assets measured at fair value on a nonrecurring basis as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 Total carrying value in the consolidated balance sheet Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market Other real estate owned $ 8,415 $ — $ — $ 8,415 Collateral dependent loans (1) 39,969 — — 39,969 Total $ 48,384 $ — $ — $ 48,384 December 31, 2020 Other real estate owned $ 12,360 $ — $ — $ 12,360 Collateral dependent loans (1) 43,795 — — 43,795 Total $ 56,155 $ — $ — $ 56,155 (1) The carrying values of collateral dependent loans at September 30, 2021 and December 31, 2020 are net of valuation allowances of $1.9 million and $3.5 million, respectively. In the case of the investment securities portfolio, Pinnacle Financial monitors the portfolio to ascertain when transfers between levels have been affected. The nature of the remaining assets and liabilities is such that transfers in and out of any level are expected to be rare. For the nine months ended September 30, 2021, there were no transfers between Levels 1, 2 or 3. The table below includes a rollforward of the balance sheet amounts for the three and nine months ended September 30, 2021 and September 30, 2020 (including the change in fair value) for financial instruments classified by Pinnacle Financial within Level 3 of the valuation hierarchy measured at fair value on a recurring basis including changes in fair value due in part to observable factors that are part of the valuation methodology (in thousands): For the Three months ended September 30, For the Nine months ended September 30, 2021 2020 2021 2020 Available-for-sale Securities Other Available-for-sale Securities Other Available-for-sale Securities Other Available-for-sale Securities Other Fair value, beginning of period $ 840 $ 78,755 $ 15,295 $ 40,612 $ 15,497 $ 47,759 $ 15,903 $ 38,156 Total realized gains included in income 2 8,603 27 456 1,300 19,000 82 4 Changes in unrealized gains/losses included in other comprehensive income 30 — 151 — (3,138) — 631 — Purchases — 10,974 — 1,095 — 36,530 — 4,822 Issuances — — — — — — — — Settlements — (3,891) — (957) (12,787) (8,848) (1,143) (1,776) Transfers out of Level 3 — — — — — — — — Fair value, end of period $ 872 $ 94,441 $ 15,473 $ 41,206 $ 872 $ 94,441 $ 15,473 $ 41,206 Total realized gains included in income $ 2 $ 8,603 $ 27 $ 456 $ 1,300 $ 19,000 $ 82 $ 4 The following tables present the carrying amounts, estimated fair value and placement in the fair value hierarchy of Pinnacle Financial's financial instruments at September 30, 2021 and December 31, 2020. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash, cash equivalents, and restricted cash, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as non-interest bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity (in thousands): Carrying/ Estimated Fair Value (1) Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market September 30, 2021 Financial assets: Securities purchased with agreement to resell $ 500,000 $ 486,315 $ — $ — $ 486,315 Securities held-to-maturity 989,237 1,014,407 — 1,014,407 — Loans, net 22,789,826 22,804,075 — — 22,804,075 Consumer loans held-for-sale 55,273 55,763 — 55,763 — Commercial loans held-for-sale 49,121 49,556 — 49,556 — Financial liabilities: Deposits and securities sold under agreements to repurchase 29,518,047 28,558,710 — — 28,558,710 Federal Home Loan Bank advances 888,493 938,917 — — 938,917 Subordinated debt and other borrowings 542,712 531,587 — — 531,587 Off-balance sheet instruments: Commitments to extend credit (2) 11,627,405 24,255 — — 24,255 December 31, 2020 Financial assets: Securities held-to-maturity $ 1,028,359 $ 1,066,531 $ — $ 1,066,531 $ — Loans, net 22,139,451 22,407,546 — — 22,407,546 Consumer loans held-for-sale 87,821 89,625 — 89,625 — Commercial loans held-for-sale 31,200 31,841 — 31,841 — Financial liabilities: Deposits and securities sold under agreements to repurchase 27,833,739 26,929,142 — — 26,929,142 Federal Home Loan Bank advances 1,087,927 1,189,035 — — 1,189,035 Subordinated debt and other borrowings 670,575 677,521 — — 677,521 Off-balance sheet instruments: Commitments to extend credit (2) 9,692,607 24,887 — — 24,887 (1) Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction. (2) At the end of each quarter, Pinnacle Financial evaluates the inherent risks of the outstanding off-balance sheet commitments, including both commitments for unfunded loans and standby letters of credit. In making this evaluation, Pinnacle Financial utilizes credit loss expectations on funded loans from our allowance for credit losses methodology and evaluates the probability that the outstanding commitment will eventually become a funded loan. As a result, at September 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $22.5 million and $23.2 million, respectively, representing expected credit losses on off-balance sheet commitments, which are reflected in the estimated fair values of the related commitments. Also included in the fair values at September 30, 2021 and December 31, 2020 are unamortized fees related to these commitments of $1.8 million and $1.7 million, respectively.

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Matters	Note 10. Regulatory Matters Pursuant to Tennessee banking law, Pinnacle Bank may not, without the prior consent of the Commissioner of the Tennessee Department of Financial Institutions (TDFI), pay any dividends to Pinnacle Financial in a calendar year in excess of the total of Pinnacle Bank's retained net income for that year plus the retained net income for the preceding two years. Under Tennessee corporate law, Pinnacle Financial is not permitted to pay dividends if, after giving effect to such payment, it would not be able to pay its debts as they become due in the usual course of business or its total assets would be less than the sum of its total liabilities plus any amounts needed to satisfy any preferential rights if it were dissolving. In addition, in deciding whether or not to declare a dividend of any particular size, Pinnacle Financial's board of directors must consider its and Pinnacle Bank's current and prospective capital, liquidity, and other needs. In addition to state law limitations on Pinnacle Financial's ability to pay dividends, the Federal Reserve imposes limitations on Pinnacle Financial's ability to pay dividends. Federal Reserve regulations limit dividends, stock repurchases and discretionary bonuses to executive officers if Pinnacle Financial's regulatory capital is below the level of regulatory minimums plus the applicable capital conservation buffer. In addition, the Federal Reserve has issued supervisory guidance advising bank holding companies to eliminate, defer or reduce dividends paid on common stock and other forms of Tier 1 capital where the company’s net income available to shareholders for the past four quarters, net of dividends previously paid during that period, is not sufficient to fully fund the dividends, the company’s prospective rate of earnings retention is not consistent with the company’s capital needs and overall current and prospective financial condition or the company will not meet, or is in danger of not meeting, minimum regulatory capital adequacy ratios. Recent supplements to this guidance reiterate the need for bank holding companies to inform their applicable reserve bank sufficiently in advance of the proposed payment of a dividend in certain circumstances. During the nine months ended September 30, 2021, Pinnacle Bank paid $66.5 million of dividends to Pinnacle Financial. As of September 30, 2021, Pinnacle Bank could pay approximately $773.1 million of additional dividends to Pinnacle Financial without prior approval of the Commissioner of the TDFI. Since the fourth quarter of 2013, Pinnacle Financial has paid a quarterly common stock dividend. The board of directors of Pinnacle Financial has increased the dividend amount per share over time. The most recent increase occurred on January 19, 2021, when the board of directors increased the dividend to $0.18 per common share from $0.16 per common share. During the second quarter of 2020, the Pinnacle Financial issued 9.0 million depositary shares, each representing a 1/40th fractional interest in a share of Series B noncumulative, perpetual preferred stock (the "Series B Preferred Stock") in a registered public offering to both retail and institutional investors. Beginning in the third quarter of 2020, Pinnacle Financial began paying a quarterly dividend of $16.88 per share (or $0.422 per depositary share), on the Series B Preferred Stock. The amount and timing of all future dividend payments by Pinnacle Financial, if any, including dividends on Pinnacle Financial's Series B Preferred Stock, is subject to discretion of Pinnacle Financial's board of directors and will depend on Pinnacle Financial's receipt of dividends from Pinnacle Bank, earnings, capital position, financial condition and other factors, including regulatory capital requirements, as they become known to Pinnacle Financial and receipt of any regulatory approvals that may become required as a result of each of Pinnacle Financial's or Pinnacle Bank's financial results. Pinnacle Financial and Pinnacle Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, Pinnacle Financial and Pinnacle Bank must meet specific capital guidelines that involve quantitative measures of the assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. Pinnacle Financial's and Pinnacle Bank's capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require Pinnacle Financial and its banking subsidiary to maintain minimum amounts and ratios of common equity Tier 1 capital to risk-weighted assets, Tier 1 capital to risk-weighted assets, total risk-based capital to risk-weighted assets and Tier 1 capital to average assets. As permitted by the interim final rule issued on March 27, 2020 by the federal banking regulatory agencies, each of Pinnacle Bank and Pinnacle Financial has elected the option to delay the estimated impact on regulatory capital of Pinnacle Financial's and Pinnacle Bank's adoption of ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, which was effective January 1, 2020. The initial impact of adoption of ASU 2016-13, as well as 25% of the quarterly changes in the allowance for credit losses subsequent to adoption of ASU 2016-13 (collectively the “transition adjustments”), will be delayed until December 31, 2021. After that date, the cumulative amount of the transition adjustments will become fixed and will be phased out of the regulatory capital calculations evenly over a three year period, with 75% recognized in 2022, 50% recognized in 2023, and 25% recognized in 2024. Beginning on January 1, 2025, the temporary regulatory capital benefits will be fully reversed. Management believes, as of September 30, 2021, 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 Bank must maintain certain 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. 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 resulting ratios, not including the capital conservation buffer, are presented in the following table (in thousands): Actual Minimum Capital Minimum Amount Ratio Amount Ratio Amount Ratio At September 30, 2021 Total capital to risk weighted assets: Pinnacle Financial $ 3,915,561 14.0 % $ 2,235,652 8.0 % $ 2,794,565 10.0 % Pinnacle Bank $ 3,466,596 12.5 % $ 2,223,799 8.0 % $ 2,779,749 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 3,156,777 11.3 % $ 1,676,739 6.0 % $ 2,235,652 8.0 % Pinnacle Bank $ 3,256,812 11.7 % $ 1,667,849 6.0 % $ 2,223,799 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,939,528 10.5 % $ 1,257,554 4.5 % NA NA Pinnacle Bank $ 3,256,689 11.7 % $ 1,250,887 4.5 % $ 1,806,837 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 3,156,777 9.3 % $ 1,355,712 4.0 % NA NA Pinnacle Bank $ 3,256,812 9.6 % $ 1,350,660 4.0 % $ 1,688,325 5.0 % At December 31, 2020 Total capital to risk weighted assets: Pinnacle Financial $ 3,678,405 14.3 % $ 2,063,352 8.0 % $ 2,579,190 10.0 % Pinnacle Bank $ 3,259,538 12.7 % $ 2,055,892 8.0 % $ 2,569,865 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 2,803,541 10.9 % $ 1,547,514 6.0 % $ 2,063,352 8.0 % Pinnacle Bank $ 2,933,674 11.4 % $ 1,541,919 6.0 % $ 2,055,892 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,586,292 10.0 % $ 1,160,635 4.5 % NA NA Pinnacle Bank $ 2,933,551 11.4 % $ 1,156,439 4.5 % $ 1,670,412 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 2,803,541 8.6 % $ 1,298,756 4.0 % NA NA Pinnacle Bank $ 2,933,674 9.1 % $ 1,294,033 4.0 % $ 1,617,541 5.0 % (*) Average assets for the above calculations were based on the most recent quarter.

Other borrowings

Other borrowings	9 Months Ended
	Sep. 30, 2021
Subordinated Debt [Abstract]
Other Borrowings	Note 11. Other Borrowings Pinnacle Financial has twelve wholly-owned subsidiaries that are statutory business trusts created for the exclusive purpose of issuing 30-year capital trust preferred securities and has entered into certain other subordinated debt agreements. These instruments are outlined below as of September 30, 2021 (in thousands): Name Date Maturity Total Debt Outstanding Interest Rate at September 30, 2021 Coupon Structure Trust preferred securities Pinnacle Statutory Trust I December 29, 2003 December 30, 2033 $ 10,310 2.92 % 30-day LIBOR + 2.80% Pinnacle Statutory Trust II September 15, 2005 September 30, 2035 20,619 1.53 % 30-day LIBOR + 1.40% Pinnacle Statutory Trust III September 7, 2006 September 30, 2036 20,619 1.78 % 30-day LIBOR + 1.65% Pinnacle Statutory Trust IV October 31, 2007 September 30, 2037 30,928 2.97 % 30-day LIBOR + 2.85% BNC Capital Trust I April 3, 2003 April 15, 2033 5,155 3.38 % 30-day LIBOR + 3.25% BNC Capital Trust II March 11, 2004 April 7, 2034 6,186 2.98 % 30-day LIBOR + 2.85% BNC Capital Trust III September 23, 2004 September 23, 2034 5,155 2.53 % 30-day LIBOR + 2.40% BNC Capital Trust IV September 27, 2006 December 31, 2036 7,217 1.83 % 30-day LIBOR + 1.70% Valley Financial Trust I June 26, 2003 June 26, 2033 4,124 3.23 % 30-day LIBOR + 3.10% Valley Financial Trust II September 26, 2005 December 15, 2035 7,217 1.61 % 30-day LIBOR + 1.49% Valley Financial Trust III December 15, 2006 January 30, 2037 5,155 1.86 % 30-day LIBOR + 1.73% Southcoast Capital Trust III August 5, 2005 September 30, 2035 10,310 1.63 % 30-day LIBOR + 1.50% Subordinated Debt Pinnacle Financial Subordinated Notes November 16, 2016 November 16, 2026 120,000 5.25 % Fixed (1) Pinnacle Financial Subordinated Notes September 11, 2019 September 15, 2029 300,000 4.13 % Fixed (2) Debt issuance costs and fair value adjustments (10,283) Total subordinated debt and other borrowings $ 542,712 (1) Migrates to three month LIBOR + 3.884% beginning November 16, 2021 through the end of the term. (2) Migrates to three month LIBOR + 2.775% beginning September 15, 2024 through the end of the term. On July 30, 2021, Pinnacle Bank redeemed $130.0 million aggregate principal amount of subordinated notes due July 30, 2025. The redemption was funded with existing cash on hand. Pursuant to regulatory guidelines, once the maturity date on subordinated notes is within five years, a portion of the notes will no longer be eligible to be included in regulatory capital, with an additional portion being excluded each year over the five year period approaching maturity. On April 22, 2020, Pinnacle Financial established a credit facility with the Federal Reserve Bank in conjunction with the SBA Paycheck Protection Program, with available borrowing capacity equal to the outstanding balance of Paycheck Protection Program loans, which totaled approximately $708.7 million at September 30, 2021. There are no amounts outstanding under this facility at September 30, 2021. Pinnacle Financial has provided notice to the holders of the $120.0 million aggregate principal amount of subordinated notes due November 16, 2026 of Pinnacle Financial's intent to redeem those notes on November 16, 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation — The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles (U.S. GAAP). All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in Pinnacle Financial's Annual Report on Form 10-K for the year ended December 31, 2020 (2020 10-K). These consolidated financial statements include the accounts of Pinnacle Financial and its wholly-owned subsidiaries. Certain statutory trust affiliates of Pinnacle Financial, as noted in Note 11. Other Borrowings are included in these consolidated financial statements pursuant to the equity method of accounting. Significant intercompany transactions and accounts are eliminated in consolidation.
Use of Estimates	Use of Estimates — The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include the determination of the allowance for credit losses and determination of any impairment of goodwill or intangible assets. There have been no significant changes to Pinnacle Financial's significant accounting policies as disclosed in the 2020 10-K.
Income Per Common Share	Income Per Common Share — Basic net income per common share (EPS) is computed by dividing net income available to common shareholders by the weighted average common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The difference between basic and diluted weighted average common shares outstanding is attributable to common stock options, restricted share awards, and restricted share unit awards. The dilutive effect of outstanding options, restricted share awards, and restricted share unit awards is reflected in diluted EPS by application of the treasury stock method. The following is a summary of the basic and diluted net income per common share calculations for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data): Three months ended Nine months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Basic net income per common share $ 1.76 $ 1.42 $ 5.07 $ 2.62 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Dilutive common shares contingently issuable 342 119 311 127 Weighted average diluted common shares outstanding 75,836 75,360 75,761 75,545 Diluted net income per common share $ 1.75 $ 1.42 $ 5.05 $ 2.62
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements — In January 2020, the FASB issued Accounting Standards Update 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815. These amendments, among other things, clarify that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments-Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments also clarify that when determining the accounting for certain forward contracts and purchased options a company should not consider, whether upon settlement or exercise, if the underlying securities would be accounted for under the equity method or fair value option. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. An entity should apply ASU 2020-01 prospectively at the beginning of the interim period that includes the adoption date. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements. In December 2019, the FASB issued Accounting Standards Update 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes to simplify various aspects of the current guidance to promote consistent application of the standard among reporting entities by moving certain exceptions to the general principles. The amendments are effective for fiscal years beginning after December 15, 2020. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements. In March 2020, the FASB issued Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , and has issued subsequent amendments thereto, which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The ASU provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. It is intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. Pinnacle Financial is implementing a transition plan to identify and modify its loans and other financial instruments, including certain indebtedness, with attributes that are either directly or indirectly influenced by LIBOR. Pinnacle Financial is assessing ASU 2020-04 and its impact on the transition away from LIBOR for its loans and other financial instruments.
Newly Issued Not Yet Effective Accounting Standards	Newly Issued Not Yet Effective Accounting Standards — Other than those pronouncements discussed above which have been recently adopted, Pinnacle Financial does not believe there were any other recently issued accounting pronouncements that are expected to materially impact its consolidated financial statements.
Reclassifications	Reclassifications — Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or stockholder's equity.
Subsequent Events	Subsequent Events — ASC Topic 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. Pinnacle Financial evaluated all events or transactions that occurred after September 30, 2021 through the date of the issued financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Supplemental Cash Flow Information	Cash Flow Information — Supplemental cash flow information addressing certain cash and noncash transactions for the nine months ended September 30, 2021 and 2020 was as follows (in thousands): For the nine months ended 2021 2020 Cash Transactions: Interest paid $ 90,651 $ 179,163 Income taxes paid, net 88,614 89,858 Operating lease payments 10,878 10,077 Noncash Transactions: Loans charged-off to the allowance for credit losses 39,319 35,724 Loans foreclosed upon and transferred to other real estate owned 798 3,435 Loans foreclosed upon and transferred to other assets — 25 Available-for-sale securities transferred to held-to-maturity portfolio — 873,613 Right-of-use asset recognized during the period in exchange for lease obligations 8,745 5,269
Basic and Diluted Earnings Per Share Calculations	The following is a summary of the basic and diluted net income per common share calculations for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data): Three months ended Nine months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Basic net income per common share $ 1.76 $ 1.42 $ 5.07 $ 2.62 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 132,779 $ 106,847 $ 382,401 $ 197,647 Denominator - Weighted average common shares outstanding 75,494 75,241 75,450 75,418 Dilutive common shares contingently issuable 342 119 311 127 Weighted average diluted common shares outstanding 75,836 75,360 75,761 75,545 Diluted net income per common share $ 1.75 $ 1.42 $ 5.05 $ 2.62

Equity method investment (Table

Equity method investment (Tables)	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	A summary of BHG's financial position as of September 30, 2021 and December 31, 2020 and results of operations as of and for the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands): As of September 30, 2021 December 31, 2020 Assets $ 2,443,304 $ 1,330,317 Liabilities 2,110,765 1,088,135 Equity interests 332,539 242,182 Total liabilities and equity $ 2,443,304 $ 1,330,317 For the three months ended For the nine months ended 2021 2020 2021 2020 Revenues $ 192,160 $ 128,510 $ 528,767 $ 319,244 Net income $ 63,280 $ 51,459 $ 184,195 $ 121,604

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	The amortized cost and fair value of securities available-for-sale and held-to-maturity at September 30, 2021 and December 31, 2020 are summarized as follows (in thousands): Amortized Gross Gross Fair September 30, 2021: Securities available-for-sale: U.S. Treasury securities $ 144,387 $ — $ 230 $ 144,157 U.S. government agency securities 423,481 1,566 2,992 422,055 Mortgage-backed securities 1,938,218 41,663 11,900 1,967,981 State and municipal securities 1,733,063 38,130 11,545 1,759,648 Asset-backed securities 220,716 214 733 220,197 Corporate notes and other 119,276 3,306 1,967 120,615 $ 4,579,141 $ 84,879 $ 29,367 $ 4,634,653 Securities held-to-maturity: State and municipal securities $ 989,398 $ 25,817 $ 808 $ 1,014,407 $ 989,398 $ 25,817 $ 808 $ 1,014,407 Allowance for credit losses - securities held-to-maturity (161) Securities held-to-maturity, net of allowance for credit losses $ 989,237 December 31, 2020: Securities available-for-sale: U.S. Treasury securities $ 82,199 $ 10 $ — $ 82,209 U.S. government agency securities 74,916 1,547 60 76,403 Mortgage-backed securities 1,623,759 67,759 2,327 1,689,191 State and municipal securities 1,411,288 44,559 12,484 1,443,363 Asset-backed securities 177,878 715 657 177,936 Corporate notes and other 117,256 2,632 2,309 117,579 $ 3,487,296 $ 117,222 17,837 $ 3,586,681 Securities held-to-maturity: State and municipal securities $ 1,028,550 $ 38,272 $ 291 $ 1,066,531 $ 1,028,550 $ 38,272 $ 291 $ 1,066,531 Allowance for credit losses - securities held-to-maturity (191) Securities held-to-maturity, net of allowance for credit losses $ 1,028,359
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	The amortized cost and fair value of debt securities as of September 30, 2021 by contractual maturity is shown below. Actual maturities may differ from contractual maturities of mortgage- and asset-backed securities since the mortgages and assets underlying the securities may be called or prepaid with or without penalty. Therefore, these securities are not included in the maturity categories in the following summary (in thousands): Available-for-sale Held-to-maturity September 30, 2021: Amortized Fair Amortized Fair Due in one year or less $ 106,128 $ 106,120 $ — $ — Due in one year to five years 56,921 56,821 1,409 1,472 Due in five years to ten years 508,208 517,678 5,676 5,734 Due after ten years 1,748,950 1,765,856 982,313 1,007,201 Mortgage-backed securities 1,938,218 1,967,981 — — Asset-backed securities 220,716 220,197 — — $ 4,579,141 $ 4,634,653 $ 989,398 $ 1,014,407
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	At September 30, 2021 and December 31, 2020, the following investments had unrealized losses. The table below classifies these investments according to the term of the unrealized losses of less than twelve months or twelve months or longer (in thousands): Investments with an Unrealized Loss of Investments with an Unrealized Loss of Total Investments with an Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized At September 30, 2021 U.S. Treasury securities $ 132,157 $ 230 $ — $ — $ 132,157 $ 230 U.S. government agency securities 195,921 2,552 14,807 440 210,728 2,992 Mortgage-backed securities 633,938 8,630 114,968 3,270 748,906 11,900 State and municipal securities 523,859 9,138 222,884 2,961 746,743 12,099 Asset-backed securities 166,457 592 6,703 141 173,160 733 Corporate notes 18,412 422 24,970 1,545 43,382 1,967 Total temporarily-impaired securities $ 1,670,744 $ 21,564 $ 384,332 $ 8,357 $ 2,055,076 $ 29,921 At December 31, 2020 U.S. Treasury securities $ — $ — $ — $ — $ — $ — U.S. government agency securities 9,962 38 6,091 22 16,053 60 Mortgage-backed securities 165,696 1,772 35,997 555 201,693 2,327 State and municipal securities 175,115 2,220 345,435 10,264 520,550 12,484 Asset-backed securities 46,399 207 52,840 450 99,239 657 Corporate notes 9,978 40 23,920 2,269 33,898 2,309 Total temporarily-impaired securities $ 407,150 $ 4,277 $ 464,283 $ 13,560 $ 871,433 $ 17,837

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans at September 30, 2021 and December 31, 2020 were as follows: September 30, 2021 December 31, 2020 Commercial real estate: Owner occupied $ 2,954,519 $ 2,802,227 Non-owner occupied 5,219,207 5,203,384 Consumer real estate – mortgage 3,540,439 3,099,172 Construction and land development 3,096,961 2,901,746 Commercial and industrial 7,788,153 8,038,457 Consumer and other 459,182 379,515 Subtotal $ 23,058,461 $ 22,424,501 Allowance for credit losses (268,635) (285,050) Loans, net $ 22,789,826 $ 22,139,451
Loan Classification Categorized by Risk Rating Category	The table below presents loan balances classified within each risk rating category by primary loan type and based on year of origination or most recent renewal as of September 30, 2021 (in thousands): September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Commercial real estate - Owner occupied Pass $ 709,613 $ 752,522 $ 396,290 $ 346,730 $ 230,544 $ 338,358 $ 74,332 $ 2,848,389 Special Mention 3,021 18,041 23,304 11,191 8,013 5,408 1,463 70,441 Substandard (1) 4,065 9,243 5,929 2,010 6,062 1,843 4,403 33,555 Substandard-nonaccrual 651 167 133 224 573 322 64 2,134 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - owner occupied $ 717,350 $ 779,973 $ 425,656 $ 360,155 $ 245,192 $ 345,931 $ 80,262 $ 2,954,519 Commercial real estate - Non-owner occupied Pass $ 1,224,463 $ 1,011,088 $ 878,712 $ 458,453 $ 409,687 $ 527,093 $ 71,142 $ 4,580,638 Special Mention 102,390 339,589 58,766 28,326 55,434 28,615 35 613,155 Substandard (1) 3,523 10,582 1,372 2,992 1,698 3,346 — 23,513 Substandard-nonaccrual — 3 95 635 — 1,168 — 1,901 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - Non-owner occupied $ 1,330,376 $ 1,361,262 $ 938,945 $ 490,406 $ 466,819 $ 560,222 $ 71,177 $ 5,219,207 Consumer real estate – mortgage Pass $ 954,840 $ 621,396 $ 344,081 $ 218,698 $ 118,796 $ 309,150 $ 946,762 $ 3,513,723 Special Mention 120 — — 697 64 977 — 1,858 Substandard (1) — 881 — — 449 1,834 2,886 6,050 Substandard-nonaccrual 289 412 3,722 766 971 10,374 2,274 18,808 Doubtful-nonaccrual — — — — — — — — Total Consumer real estate – mortgage $ 955,249 $ 622,689 $ 347,803 $ 220,161 $ 120,280 $ 322,335 $ 951,922 $ 3,540,439 Construction and land development Pass $ 1,148,364 $ 982,922 $ 710,816 $ 180,189 $ 26,367 $ 15,867 $ 15,876 $ 3,080,401 Special Mention 2,877 3,280 8,653 — — — — 14,810 Substandard (1) — — 12 20 — 74 — 106 Substandard-nonaccrual — 866 517 59 66 136 — 1,644 Doubtful-nonaccrual — — — — — — — — Total Construction and land development $ 1,151,241 $ 987,068 $ 719,998 $ 180,268 $ 26,433 $ 16,077 $ 15,876 $ 3,096,961 Commercial and industrial Pass $ 2,566,847 $ 1,046,415 $ 675,802 $ 328,921 $ 124,091 $ 139,904 $ 2,682,244 $ 7,564,224 Special Mention 8,889 15,797 54,965 7,304 724 1,197 36,853 125,729 Substandard (1) 23,211 642 5,852 2,380 4,505 2,324 37,103 76,017 Substandard-nonaccrual 4,231 12,869 549 475 250 391 3,418 22,183 Doubtful-nonaccrual — — — — — — — — Total Commercial and industrial $ 2,603,178 $ 1,075,723 $ 737,168 $ 339,080 $ 129,570 $ 143,816 $ 2,759,618 $ 7,788,153 Consumer and other Pass $ 168,925 $ 94,798 $ 7,670 $ 2,687 $ 2,909 $ 2,058 $ 180,113 $ 459,160 Special Mention — — — — — — — — Substandard (1) — — — — — — — — Substandard-nonaccrual — — — — 18 1 3 22 Doubtful-nonaccrual — — — — — — — — Total Consumer and other $ 168,925 $ 94,798 $ 7,670 $ 2,687 $ 2,927 $ 2,059 $ 180,116 $ 459,182 Total loans Pass $ 6,773,052 $ 4,509,141 $ 3,013,371 $ 1,535,678 $ 912,394 $ 1,332,430 $ 3,970,469 $ 22,046,535 Special Mention 117,297 376,707 145,688 47,518 64,235 36,197 38,351 825,993 Substandard (1) 30,799 21,348 13,165 7,402 12,714 9,421 44,392 139,241 Substandard-nonaccrual 5,171 14,317 5,016 2,159 1,878 12,392 5,759 46,692 September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Doubtful-nonaccrual — — — — — — — — Total loans $ 6,926,319 $ 4,921,513 $ 3,177,240 $ 1,592,757 $ 991,221 $ 1,390,440 $ 4,058,971 $ 23,058,461
Past Due Balances by Loan Classification	The table below presents the aging of past due balances by loan segment at September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 30-59 days past due 60-89 days past due 90 days or more past due Total Current Total loans Commercial real estate: Owner occupied $ 2,519 $ — $ 1,618 $ 4,137 $ 2,950,382 $ 2,954,519 Non-owner occupied 3,375 359 1,317 5,051 5,214,156 5,219,207 Consumer real estate – mortgage 2,593 7,599 5,265 15,457 3,524,982 3,540,439 Construction and land development 776 645 648 2,069 3,094,892 3,096,961 Commercial and industrial 3,410 5,302 4,557 13,269 7,774,884 7,788,153 Consumer and other 1,376 696 247 2,319 456,863 459,182 Total $ 14,049 $ 14,601 $ 13,652 $ 42,302 $ 23,016,159 $ 23,058,461 December 31, 2020 Commercial real estate: Owner occupied $ 934 $ 2,672 $ 1,860 $ 5,466 $ 2,796,761 $ 2,802,227 Non-owner occupied 726 6,220 3,861 10,807 5,192,577 5,203,384 Consumer real estate – mortgage 8,859 328 6,274 15,461 3,083,711 3,099,172 Construction and land development 278 418 736 1,432 2,900,314 2,901,746 Commercial and industrial 20,278 5,801 4,408 30,487 8,007,970 8,038,457 Consumer and other 806 282 304 1,392 378,123 379,515 Total $ 31,881 $ 15,721 $ 17,443 $ 65,045 $ 22,359,456 $ 22,424,501
Details of Changes in the Allowance for Loan Losses	The following table details the changes in the allowance for credit losses for the three and nine months ended September 30, 2021 and 2020, respectively, by loan classification (in thousands): Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Three months ended September 30, 2021: Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Charged-off loans (543) (201) (94) — (10,167) (1,284) — (12,289) Recovery of previously charged-off loans 80 326 777 32 997 796 — 3,008 Provision for credit losses on loans 411 (5,180) (103) (659) 8,485 1,215 — 4,169 Balance at September 30, 2021 $ 19,259 $ 74,026 $ 31,025 $ 32,860 $ 101,416 $ 10,049 $ — $ 268,635 Three months ended September 30, 2020: Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372 Charged-off loans (186) (222) (907) — (12,984) (730) — (15,029) Recovery of previously charged-off loans 47 432 297 7 799 391 — 1,973 Provision for credit losses on loans (2,238) 1,223 3,201 (682) 13,783 1,042 — 16,329 Balance at September 30, 2020 $ 36,426 $ 69,859 $ 31,949 $ 41,222 $ 102,208 $ 6,981 $ — $ 288,645 Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Nine months ended September 30, 2021: Balance at December 31, 2020 $ 23,298 $ 79,132 $ 33,304 $ 42,408 $ 98,423 $ 8,485 $ — $ 285,050 Charged-off loans (1,246) (672) (626) (367) (32,890) (3,518) — (39,319) Recovery of previously charged-off loans 1,158 486 1,690 269 2,848 2,222 — 8,673 Provision for credit losses on loans (3,951) (4,920) (3,343) (9,450) 33,035 2,860 — 14,231 Balance at September 30, 2021 $ 19,259 $ 74,026 $ 31,025 $ 32,860 $ 101,416 $ 10,049 $ — $ 268,635 Nine months ended September 30, 2020: Balance at December 31, 2019 $ 13,406 $ 19,963 $ 8,054 $ 12,662 $ 36,112 $ 3,595 $ 985 $ 94,777 Impact of adopting ASC 326 264 (4,740) 21,029 (3,144) 23,040 2,638 (985) 38,102 Charged-off loans (1,247) (485) (3,033) — (27,982) (2,977) — (35,724) Recovery of previously charged-off loans 272 631 971 100 3,798 1,356 — 7,128 Provision for credit losses on loans 23,731 54,490 4,928 31,604 67,240 2,369 — 184,362 Balance at September 30, 2020 $ 36,426 $ 69,859 $ 31,949 $ 41,222 $ 102,208 $ 6,981 $ — $ 288,645
Schedule of Collateral Dependent Loans Individually Evaluated for ACL	The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses, as of September 30, 2021 and December 31, 2020 (in thousands): Real Estate Business Assets Other Total September 30, 2021 Commercial real estate: Owner occupied $ 5,517 $ — $ — $ 5,517 Non-owner occupied 6,039 — — 6,039 Consumer real estate – mortgage 23,530 — — 23,530 Construction and land development 2,632 — — 2,632 Commercial and industrial — 11,443 838 12,281 Consumer and other — — 19 19 Total $ 37,718 $ 11,443 $ 857 $ 50,018 December 31, 2020 Commercial real estate: Owner occupied $ 15,681 $ — $ — $ 15,681 Non-owner occupied 7,000 — — 7,000 Consumer real estate – mortgage 27,082 — — 27,082 Construction and land development 2,049 — — 2,049 Commercial and industrial — 22,437 39 22,476 Consumer and other — — 4 4 Total $ 51,812 $ 22,437 $ 43 $ 74,292
Financing Receivable, Nonaccrual	The table below presents the amortized cost basis of loans on nonaccrual status and loans past due 90 or more days and still accruing interest at September 30, 2021 and December 31, 2020. Also presented is the balance of loans on nonaccrual status at September 30, 2021 for which there was no related allowance for credit losses recorded (in thousands): September 30, 2021 December 31, 2020 Total nonaccrual loans Nonaccrual loans with no allowance for credit losses Loans past due 90 or more days and still accruing Total nonaccrual loans Nonaccrual loans with no allowance for credit losses Loans past due 90 or more days and still accruing Commercial real estate: Owner occupied $ 2,134 $ — $ 306 $ 10,231 $ 5,985 $ — Non-owner occupied 1,901 — — 5,219 1,522 — Consumer real estate – mortgage 18,808 — 549 22,191 — 273 Construction and land development 1,645 — — 1,953 — — Commercial and industrial 22,182 17,538 812 34,238 29,030 1,785 Consumer and other 22 — 247 4 — 304 Total $ 46,692 $ 17,538 $ 1,914 $ 73,836 $ 36,537 $ 2,362
Troubled Debt Restructurings	The following table outlines the amount of each loan category where troubled debt restructurings were made during the nine months ended September 30, 2020 (in thousands): September 30, 2020 Number Pre Modification Outstanding Recorded Investment Post Modification Outstanding Recorded Investment, net of related allowance Consumer real estate – mortgage 1 $ 807 $ 807
Summary of Loan Portfolio Credit Risk Exposure	Pinnacle Financial analyzes its commercial loan portfolio to determine if a concentration of credit risk exists to any industries. Pinnacle Financial utilizes broadly accepted industry classification systems in order to classify borrowers into various industry classifications. Pinnacle Financial has a credit exposure (loans outstanding plus unfunded lines of credit) exceeding 25% of Pinnacle Bank's total risk-based capital to borrowers in the following industries at September 30, 2021 with the comparative exposures for December 31, 2020 (in thousands): September 30, 2021 Outstanding Principal Balances Unfunded Commitments Total exposure Total Exposure at December 31, 2020 Lessors of nonresidential buildings $ 3,694,063 $ 1,366,385 $ 5,060,448 $ 4,442,712 Lessors of residential buildings 1,377,334 923,992 2,301,326 2,126,246 Hotels (except Casino Hotels) and Motels 936,734 53,999 990,733 1,039,259 New Housing For-Sale Builders 542,968 893,927 1,436,895 1,124,302

Stock Options and Restricted _2

Stock Options and Restricted Shares (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Summary of Stock Option Activity	A summary of the stock option activity within the equity incentive plans during the nine months ended September 30, 2021 and information regarding, contractual terms remaining, intrinsic values and other matters is as follows: Number Weighted-Average Weighted-Average Aggregate Outstanding at December 31, 2020 101,769 $ 23.46 1.86 $ 4,169 (1) Granted — Exercised (31,451) Forfeited (497) Outstanding at September 30, 2021 69,821 $ 23.97 1.28 $ 4,895 (2) Options exercisable at September 30, 2021 69,821 $ 23.97 1.28 $ 4,895 (2) (1) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $64.40 per common share at December 31, 2020 for the 101,769 options that were in-the-money at December 31, 2020. (2) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $94.08 per common share at September 30, 2021 for the 69,821 options that were in-the-money at September 30, 2021.
Summary of Activity for Unvested Restricted Share Awards	A summary of activity for unvested restricted share awards for the nine months ended September 30, 2021 is as follows: Number Grant Date Unvested at December 31, 2020 594,669 $ 56.97 Shares awarded 225,481 Restrictions lapsed and shares released to associates/directors (179,410) Shares forfeited (30,912) Unvested at September 30, 2021 609,828 $ 63.35 Pinnacle Financial has granted restricted share awards to associates and outside directors with a time-based vesting criteria. Compensation expense associated with time-based vesting restricted share awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock grants that were made, grouped by similar vesting criteria, during the nine months ended September 30, 2021. The table reflects the life-to-date activity for these awards: Grant Group (1) Vesting Shares Restrictions lapsed and shares released to participants Shares withheld for taxes by participants Shares forfeited by participants (4) Shares unvested Time Based Awards 2021 Associates (2) 3 - 5 213,651 139 92 11,248 202,172 Outside Director Awards (3) 2021 Outside directors 1 11,830 — — — 11,830 (1) Groups include employees (referred to as associates above) and outside directors. When the restricted shares are awarded, a participant receives voting rights and forfeitable dividend rights with respect to the shares, but is not able to transfer the shares until the restrictions have lapsed. Once the restrictions lapse, the participant is taxed on the value of the award and may elect to sell some shares (or have Pinnacle Financial withhold some shares) to pay the applicable income taxes associated with the award. Alternatively, the recipient can pay the withholding taxes in cash. For time-based vesting restricted share awards, dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination. For awards to Pinnacle Financial's directors, dividends are placed into escrow until the forfeiture restrictions on such shares lapse. (2) The forfeiture restrictions on these restricted share awards lapse in equal annual installments on the anniversary date of the grant. (3) Restricted share awards are issued to the outside members of the board of directors in accordance with their board compensation plan. Restrictions lapse on March 1, 2022 based on each individual board member meeting attendance goals for the various board and board committee meetings to which each member was scheduled to attend. (4) These shares represent forfeitures resulting from recipients whose employment or board membership was terminated during the year-to-date period ended September 30, 2021. Any dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination or will not be distributed from escrow, as applicable.
Summary of Restricted Share Unit awards	Restricted Stock Unit Awards In 2021, Pinnacle Financial granted restricted stock units to its Named Executive Officers (NEOs) and leadership team members with time-based vesting criteria. Compensation expense associated with time-based vesting restricted stock unit awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock unit grants that were made, grouped by similar vesting criteria, during the nine months ended September 30, 2021. The table reflects the life-to-date activity for these awards: Grant year Vesting Shares Restrictions lapsed and shares released to participants Shares withheld for taxes by participants Shares forfeited by participants (1) Shares unvested 2021 3 56,864 89 39 368 56,368 (1) These shares represent forfeitures resulting from recipients whose employment was terminated during the year-to-date period ended September 30, 2021. Dividend equivalents are held in escrow for award recipients for dividends paid prior to the forfeiture restrictions lapsing. Such dividend equivalents are not released from escrow if an award is forfeited. Performance Stock Unit Awards The following table details the performance stock unit awards outstanding at September 30, 2021: Units Awarded Grant year NEOs (1) Leadership Team other than NEOs Applicable performance periods associated with each tranche Service period per tranche Subsequent holding period per tranche Period in which units to be settled into shares of common stock (2) 2021 (3) 89,234 — 214,155 45,240 2021-2023 0 0 2024 2020 136,137 — 204,220 59,648 2020 2 3 2025 2021 2 2 2025 2022 2 1 2025 2019 166,211 — 249,343 52,244 2019 2 3 2024 2020 2 2 2024 2021 2 1 2024 2018 96,878 — 145,339 25,990 2018 2 3 2023 2019 2 2 2023 2020 2 1 2023 2017 72,537 — 109,339 24,916 2017 2 3 2022 2018 2 2 2022 2019 2 1 2022 (1) The named executive officers are awarded a range of awards that may be earned based on attainment of goals between a target level of performance and a maximum level of performance. (2) Performance stock unit awards granted prior to 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the periods noted in the table, if Pinnacle Bank's ratio of non-performing assets to its loans plus ORE is less than amounts established in the applicable award agreement.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Swaps	A summary of Pinnacle Financial's interest rate swaps to facilitate customers' transactions as of September 30, 2021 and December 31, 2020 is included in the following table (in thousands): September 30, 2021 December 31, 2020 Notional Estimated Notional Estimated Interest rate swap agreements: Assets $ 1,634,589 $ 56,797 $ 1,565,916 $ 101,602 Liabilities 1,634,589 (57,487) 1,565,916 (102,919) Total $ 3,269,178 $ (690) $ 3,131,832 $ (1,317) The effects of Pinnacle Financial's interest rate swaps to facilitate customers' transactions on the income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Amount of Gain (Loss) Recognized in Income Location of Loss Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest rate swap agreements Other noninterest income $ 126 $ (135) $ 627 $ (1,272)
Schedule of Derivative Instruments	Derivatives designated as cash flow hedges For derivative instruments that are designated and qualify as a cash flow hedge, the aggregate fair value of the derivative instrument is recorded in other assets or other liabilities with any gain or loss related to changes in fair value recorded in accumulated other comprehensive income (loss), net of tax. The gain or loss is reclassified into earnings in the same period during which the hedged asset or liability affects earnings and is presented in the same income statement line item as the earnings effect of the hedged asset or liability. Pinnacle Financial uses forward cash flow hedge relationships in an effort to manage future interest rate exposure. A summary of Pinnacle Financial's cash flow hedge relationships as of September 30, 2021 and December 31, 2020 is as follows (in thousands): September 30, 2021 December 31, 2020 Balance Sheet Location Notional Estimated Notional Estimated Asset derivatives Interest rate floor Other assets $ — $ — $ 1,500,000 $ 124,585 The effects of Pinnacle Financial's cash flow hedge relationships on the statement of comprehensive income (loss) during the three and nine months ended September 30, 2021 and 2020 were as follows, net of tax (in thousands): Amount of Gain (Loss) Recognized Three Months Ended September 30, Nine Months Ended September 30, Asset derivatives 2021 2020 2021 2020 Interest rate floor - loans $ — $ (3,506) $ (15,034) $ 68,161 Liability derivatives Interest rate swaps - borrowings $ — $ 480 $ — $ (959) $ — $ (3,026) $ (15,034) $ 67,202 The cash flow hedges were determined to be highly effective during the periods presented and as a result qualify for hedge accounting treatment. If a hedge was deemed to be ineffective, the amount included in accumulated other comprehensive income (loss) would be reclassified into a line item within the statement of income that impacts operating results. The hedge would no longer be considered effective if a portion of the hedge becomes ineffective, the item hedged is no longer in existence or Pinnacle Financial discontinues hedge accounting. Gains on cash flow hedges totaling $4.3 million and $6.5 million, net of tax, were reclassified from accumulated other comprehensive income (loss) into net income during the three and nine months ended September 30, 2021, respectively, compared to losses totaling $156,000 and $1.9 million, net of tax, during the three and nine months ended September 30, 2020, respectively. During the second quarter of 2021, loan interest rate floors with a notional amount totaling $1.5 billion and unrealized gains totaling $34.3 million, net of tax, were terminated. These unrealized gains are being amortized into income on a straight line basis through November 2024. Approximately $10.6 million in unrealized gains, net of tax, are expected to be reclassified from accumulated other comprehensive income (loss) into net income over the next twelve months related to previously terminated cash flow hedges. Derivatives designated as fair value hedges For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged asset or liability attributable to the hedged risk are recognized in current earnings. The gain or loss on the derivative instrument is presented on the same income statement line item as the earnings effect of the hedged item. Pinnacle Financial utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of fixed rate callable available-for-sale securities. The hedging strategy converts the fixed interest rates to variable interest rates based on LIBOR or federal funds rates. These derivatives are designated as partial term hedges of selected cash flows covering specified periods of time prior to the call dates of the hedged securities. A summary of Pinnacle Financial's fair value hedge relationships as of September 30, 2021 and December 31, 2020 is as follows (in thousands): September 30, 2021 December 31, 2020 Balance Sheet Location Weighted Average Remaining Maturity (In Years) Weighted Average Pay Rate Receive Rate Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Asset derivatives Interest rate swaps - securities Other assets 5.66 0.54% Federal Funds $ 464,762 $ 11,989 $ 231,421 $ 4,696 Liability derivatives Interest rate swaps - securities Other liabilities 5.15 2.71% 3 month LIBOR/Federal Funds $ 566,728 $ (48,779) $ 477,510 $ (72,010) $ 1,031,490 $ (36,790) $ 708,931 $ (67,314) Notional amounts of $477.5 million included in the table above receive a variable rate of interest based on three month LIBOR and notional amounts totaling $554.0 million receive a variable rate of interest based on the daily compounded federal funds rate. The effects of Pinnacle Financial's securities fair value hedge relationships on the income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Location of Gain (Loss) Amount of Gain (Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest rate swaps - securities Interest income on securities $ 3,850 $ 4,996 $ 30,524 $ (36,436) Securities available-for-sale Interest income on securities $ (3,850) $ (4,996) $ (30,524) $ 36,436 The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at September 30, 2021 and December 31, 2020 (in thousands): Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Line item on the balance sheet Securities available-for-sale $ 1,198,990 $ 841,543 $ 36,790 $ 67,314 During the three and nine months ended September 30, 2021, amortization expense totaling $726,000 and $2.6 million, respectively, related to previously terminated fair value hedges was recognized as a reduction to interest income on loans compared to $1.2 million and $3.3 million during the three and nine months ended September 30, 2020, respectively.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present financial instruments measured at fair value on a recurring basis as of September 30, 2021 and December 31, 2020, by caption on the consolidated balance sheets and by FASB ASC 820 valuation hierarchy (as described above) (in thousands): Total carrying value in the consolidated balance sheet Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market parameters September 30, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 144,157 $ — $ 144,157 $ — U.S. government agency securities 422,055 — 422,055 — Mortgage-backed securities 1,967,981 — 1,967,981 — State and municipal securities 1,759,648 — 1,758,776 872 Agency-backed securities 220,197 — 220,197 — Corporate notes and other 120,615 — 120,615 — Total investment securities available-for-sale 4,634,653 — 4,633,781 872 Other investments 119,647 — 25,206 94,441 Other assets 73,230 — 73,230 — Total assets at fair value $ 4,827,530 $ — $ 4,732,217 $ 95,313 Other liabilities $ 105,953 $ — $ 105,953 $ — Total liabilities at fair value $ 105,953 $ — $ 105,953 $ — December 31, 2020 Investment securities available-for-sale: U.S. Treasury securities $ 82,209 $ — $ 82,209 $ — U.S. government agency securities 76,403 — 76,403 — Mortgage-backed securities 1,689,191 — 1,689,191 — State and municipal securities 1,443,363 — 1,427,866 15,497 Agency-backed securities 177,936 — 177,936 — Corporate notes and other 117,579 — 117,579 — Total investment securities available-for-sale 3,586,681 — 3,571,184 15,497 Other investments 73,395 — 25,636 47,759 Other assets 242,470 — 242,470 — Total assets at fair value $ 3,902,546 $ — $ 3,839,290 $ 63,256 Other liabilities $ 177,025 $ — $ 177,025 $ — Total liabilities at fair value $ 177,025 $ — $ 177,025 $ —
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis	The following table presents assets measured at fair value on a nonrecurring basis as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 Total carrying value in the consolidated balance sheet Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market Other real estate owned $ 8,415 $ — $ — $ 8,415 Collateral dependent loans (1) 39,969 — — 39,969 Total $ 48,384 $ — $ — $ 48,384 December 31, 2020 Other real estate owned $ 12,360 $ — $ — $ 12,360 Collateral dependent loans (1) 43,795 — — 43,795 Total $ 56,155 $ — $ — $ 56,155 (1) The carrying values of collateral dependent loans at September 30, 2021 and December 31, 2020 are net of valuation allowances of $1.9 million and $3.5 million, respectively.
Rollforward of the Balance Sheet Amounts, Unobservable Input Reconciliation	The table below includes a rollforward of the balance sheet amounts for the three and nine months ended September 30, 2021 and September 30, 2020 (including the change in fair value) for financial instruments classified by Pinnacle Financial within Level 3 of the valuation hierarchy measured at fair value on a recurring basis including changes in fair value due in part to observable factors that are part of the valuation methodology (in thousands): For the Three months ended September 30, For the Nine months ended September 30, 2021 2020 2021 2020 Available-for-sale Securities Other Available-for-sale Securities Other Available-for-sale Securities Other Available-for-sale Securities Other Fair value, beginning of period $ 840 $ 78,755 $ 15,295 $ 40,612 $ 15,497 $ 47,759 $ 15,903 $ 38,156 Total realized gains included in income 2 8,603 27 456 1,300 19,000 82 4 Changes in unrealized gains/losses included in other comprehensive income 30 — 151 — (3,138) — 631 — Purchases — 10,974 — 1,095 — 36,530 — 4,822 Issuances — — — — — — — — Settlements — (3,891) — (957) (12,787) (8,848) (1,143) (1,776) Transfers out of Level 3 — — — — — — — — Fair value, end of period $ 872 $ 94,441 $ 15,473 $ 41,206 $ 872 $ 94,441 $ 15,473 $ 41,206 Total realized gains included in income $ 2 $ 8,603 $ 27 $ 456 $ 1,300 $ 19,000 $ 82 $ 4
Carrying Amounts, Estimated Fair Value and Placement in the Fair Value Hierarchy of Financial Instruments	The following tables present the carrying amounts, estimated fair value and placement in the fair value hierarchy of Pinnacle Financial's financial instruments at September 30, 2021 and December 31, 2020. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash, cash equivalents, and restricted cash, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as non-interest bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity (in thousands): Carrying/ Estimated Fair Value (1) Quoted market prices in an active market Models with significant observable market parameters Models with significant unobservable market September 30, 2021 Financial assets: Securities purchased with agreement to resell $ 500,000 $ 486,315 $ — $ — $ 486,315 Securities held-to-maturity 989,237 1,014,407 — 1,014,407 — Loans, net 22,789,826 22,804,075 — — 22,804,075 Consumer loans held-for-sale 55,273 55,763 — 55,763 — Commercial loans held-for-sale 49,121 49,556 — 49,556 — Financial liabilities: Deposits and securities sold under agreements to repurchase 29,518,047 28,558,710 — — 28,558,710 Federal Home Loan Bank advances 888,493 938,917 — — 938,917 Subordinated debt and other borrowings 542,712 531,587 — — 531,587 Off-balance sheet instruments: Commitments to extend credit (2) 11,627,405 24,255 — — 24,255 December 31, 2020 Financial assets: Securities held-to-maturity $ 1,028,359 $ 1,066,531 $ — $ 1,066,531 $ — Loans, net 22,139,451 22,407,546 — — 22,407,546 Consumer loans held-for-sale 87,821 89,625 — 89,625 — Commercial loans held-for-sale 31,200 31,841 — 31,841 — Financial liabilities: Deposits and securities sold under agreements to repurchase 27,833,739 26,929,142 — — 26,929,142 Federal Home Loan Bank advances 1,087,927 1,189,035 — — 1,189,035 Subordinated debt and other borrowings 670,575 677,521 — — 677,521 Off-balance sheet instruments: Commitments to extend credit (2) 9,692,607 24,887 — — 24,887 (1) Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction. (2) At the end of each quarter, Pinnacle Financial evaluates the inherent risks of the outstanding off-balance sheet commitments, including both commitments for unfunded loans and standby letters of credit. In making this evaluation, Pinnacle Financial utilizes credit loss expectations on funded loans from our allowance for credit losses methodology and evaluates the probability that the outstanding commitment will eventually become a funded loan. As a result, at September 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $22.5 million and $23.2 million, respectively, representing expected credit losses on off-balance sheet commitments, which are reflected in the estimated fair values of the related commitments. Also included in the fair values at September 30, 2021 and December 31, 2020 are unamortized fees related to these commitments of $1.8 million and $1.7 million, respectively.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Sep. 30, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Summary of Regulatory Capital Requirement	Management believes, as of September 30, 2021, 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 Bank must maintain certain 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. 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 resulting ratios, not including the capital conservation buffer, are presented in the following table (in thousands): Actual Minimum Capital Minimum Amount Ratio Amount Ratio Amount Ratio At September 30, 2021 Total capital to risk weighted assets: Pinnacle Financial $ 3,915,561 14.0 % $ 2,235,652 8.0 % $ 2,794,565 10.0 % Pinnacle Bank $ 3,466,596 12.5 % $ 2,223,799 8.0 % $ 2,779,749 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 3,156,777 11.3 % $ 1,676,739 6.0 % $ 2,235,652 8.0 % Pinnacle Bank $ 3,256,812 11.7 % $ 1,667,849 6.0 % $ 2,223,799 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,939,528 10.5 % $ 1,257,554 4.5 % NA NA Pinnacle Bank $ 3,256,689 11.7 % $ 1,250,887 4.5 % $ 1,806,837 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 3,156,777 9.3 % $ 1,355,712 4.0 % NA NA Pinnacle Bank $ 3,256,812 9.6 % $ 1,350,660 4.0 % $ 1,688,325 5.0 % At December 31, 2020 Total capital to risk weighted assets: Pinnacle Financial $ 3,678,405 14.3 % $ 2,063,352 8.0 % $ 2,579,190 10.0 % Pinnacle Bank $ 3,259,538 12.7 % $ 2,055,892 8.0 % $ 2,569,865 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 2,803,541 10.9 % $ 1,547,514 6.0 % $ 2,063,352 8.0 % Pinnacle Bank $ 2,933,674 11.4 % $ 1,541,919 6.0 % $ 2,055,892 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,586,292 10.0 % $ 1,160,635 4.5 % NA NA Pinnacle Bank $ 2,933,551 11.4 % $ 1,156,439 4.5 % $ 1,670,412 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 2,803,541 8.6 % $ 1,298,756 4.0 % NA NA Pinnacle Bank $ 2,933,674 9.1 % $ 1,294,033 4.0 % $ 1,617,541 5.0 % (*) Average assets for the above calculations were based on the most recent quarter.

Other borrowings (Tables)

Other borrowings (Tables)	9 Months Ended
	Sep. 30, 2021
Subordinated Debt [Abstract]
Schedule of Other Borrowings	Pinnacle Financial has twelve wholly-owned subsidiaries that are statutory business trusts created for the exclusive purpose of issuing 30-year capital trust preferred securities and has entered into certain other subordinated debt agreements. These instruments are outlined below as of September 30, 2021 (in thousands): Name Date Maturity Total Debt Outstanding Interest Rate at September 30, 2021 Coupon Structure Trust preferred securities Pinnacle Statutory Trust I December 29, 2003 December 30, 2033 $ 10,310 2.92 % 30-day LIBOR + 2.80% Pinnacle Statutory Trust II September 15, 2005 September 30, 2035 20,619 1.53 % 30-day LIBOR + 1.40% Pinnacle Statutory Trust III September 7, 2006 September 30, 2036 20,619 1.78 % 30-day LIBOR + 1.65% Pinnacle Statutory Trust IV October 31, 2007 September 30, 2037 30,928 2.97 % 30-day LIBOR + 2.85% BNC Capital Trust I April 3, 2003 April 15, 2033 5,155 3.38 % 30-day LIBOR + 3.25% BNC Capital Trust II March 11, 2004 April 7, 2034 6,186 2.98 % 30-day LIBOR + 2.85% BNC Capital Trust III September 23, 2004 September 23, 2034 5,155 2.53 % 30-day LIBOR + 2.40% BNC Capital Trust IV September 27, 2006 December 31, 2036 7,217 1.83 % 30-day LIBOR + 1.70% Valley Financial Trust I June 26, 2003 June 26, 2033 4,124 3.23 % 30-day LIBOR + 3.10% Valley Financial Trust II September 26, 2005 December 15, 2035 7,217 1.61 % 30-day LIBOR + 1.49% Valley Financial Trust III December 15, 2006 January 30, 2037 5,155 1.86 % 30-day LIBOR + 1.73% Southcoast Capital Trust III August 5, 2005 September 30, 2035 10,310 1.63 % 30-day LIBOR + 1.50% Subordinated Debt Pinnacle Financial Subordinated Notes November 16, 2016 November 16, 2026 120,000 5.25 % Fixed (1) Pinnacle Financial Subordinated Notes September 11, 2019 September 15, 2029 300,000 4.13 % Fixed (2) Debt issuance costs and fair value adjustments (10,283) Total subordinated debt and other borrowings $ 542,712 (1) Migrates to three month LIBOR + 3.884% beginning November 16, 2021 through the end of the term. (2) Migrates to three month LIBOR + 2.775% beginning September 15, 2024 through the end of the term.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details)	Sep. 30, 2021market
Accounting Policies [Abstract]
Number of markets entity operates	14
Bankers Healthcare Group, LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	49.00%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2018	Sep. 30, 2021	Sep. 30, 2020
Cash Transactions:
Interest paid					$ 90,651	$ 179,163
Income taxes paid, net					88,614	89,858
Operating lease payments					10,878	10,077
Noncash Transactions:
Loans charged-off to the allowance for credit losses	$ 12,289	$ 15,029			39,319	35,724
Loans foreclosed upon and transferred to other real estate owned					798	3,435
Loans foreclosed upon and transferred to other assets					0	25
Available-for-sale securities transferred to held-to-maturity portfolio			$ 873,600	$ 179,800	0	873,613
Right of use assets recognized during the period in exchange for lease obligations					$ 8,745	$ 5,269

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Basic and Diluted Net Income Per Share Calculations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic net income per common share calculation:
Net income available to common shareholders	$ 132,779	$ 106,847	$ 382,401	$ 197,647
Denominator - Weighted average common shares outstanding (in shares)	75,494,286	75,240,664	75,449,900	75,417,663
Basic net income per common share (in dollars per share)	$ 1.76	$ 1.42	$ 5.07	$ 2.62
Diluted net income per common share calculation:
Numerator – Net income available to common shareholders	$ 132,779	$ 106,847	$ 382,401	$ 197,647
Denominator - Weighted average common shares outstanding (in shares)	75,494,000	75,241,000	75,450,000	75,418,000
Dilutive shares contingently issuable (in shares)	342,000	119,000	311,000	127,000
Weighted average diluted common shares outstanding (in shares)	75,836,142	75,360,033	75,760,618	75,544,677
Diluted net income per common share (in dollars per share)	$ 1.75	$ 1.42	$ 5.05	$ 2.62

Equity method investment - Fina

Equity method investment - Financial Position and Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Assets	$ 36,523,936		$ 36,523,936		$ 34,932,860
Liabilities	31,332,138		31,332,138		30,028,249
Total liabilities and shareholders' equity	36,523,936		36,523,936		34,932,860
Bankers Healthcare Group, LLC
Schedule of Equity Method Investments [Line Items]
Assets	2,443,304		2,443,304		1,330,317
Liabilities	2,110,765		2,110,765		1,088,135
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	332,539		332,539		242,182
Total liabilities and shareholders' equity	2,443,304		2,443,304		$ 1,330,317
Revenues	192,160	$ 128,510	528,767	$ 319,244
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 63,280	$ 51,459	$ 184,195	$ 121,604

Equity method investment - Narr

Equity method investment - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Loans	$ 23,058,461,000		$ 23,058,461,000		$ 22,424,501,000
Technology, trade name and customer relationship intangibles	35,876,000		35,876,000		42,336,000
Amortization of Intangible Assets	2,088,000	$ 2,417,000	6,461,000	$ 7,416,000
Dividends received from equity method investment			66,221,000	47,981,000
Bankers Healthcare Group, LLC
Schedule of Equity Method Investments [Line Items]
Loans	263,200,000		263,200,000		95,800,000
Technology, trade name and customer relationship intangibles	7,000,000		7,000,000		$ 7,600,000
Amortization of Intangible Assets	188,000	293,000	564,000	880,000
Accretion income	349,000	535,000	1,200,000	1,600,000
Dividends received from equity method investment	16,800,000	40,000,000	66,200,000	48,000,000
Payments to Acquire Loans Held-for-investment	$ 75,800,000	$ 50,200,000	$ 200,700,000	$ 50,200,000

Securities Securities - Narrati

Securities Securities - Narrative (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2018	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral to secure public funds and other deposits or securities sold under agreements to repurchase	$ 649,500,000				$ 649,500,000
Secured borrowing under agreement to repurchase	148,200,000				148,200,000
Available-for-sale securities transferred to Held-to-Maturity			$ 873,600,000	$ 179,800,000	0	$ 873,613,000
Unrealized after tax gain (loss) on available for sale securities transferred to the held to maturity portfolio			69,000,000	(2,200,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	29,921,000				29,921,000		$ 17,837,000
Debt Securities, Available-for-sale, Unrealized Loss Position	2,055,076,000				2,055,076,000		871,433,000
Available-for-sale securities transferred to held-to-maturity portfolio			$ 873,600,000	$ 179,800,000	0	873,613,000
Allowance for credit losses - securities held-to-maturity	(161,000)				(161,000)		$ (191,000)
Sales					2,240,000	145,631,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	$ 481,000			270,000	$ 728,000
Securities pledged as collateral
Debt Securities, Available-for-sale [Line Items]
Secured borrowing under agreement to repurchase	$ 148,200,000				$ 148,200,000

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Securities available-for-sale [Abstract]
Amortized Cost	$ 4,579,141,000	$ 3,487,296,000
Gross Unrealized Gains	84,879,000	117,222,000
Gross Unrealized Losses	29,367,000	17,837,000
Fair Value	4,634,653,000	3,586,681,000
Available-for-sale, Amortized Cost [Abstract]
Due in one year or less	106,128,000
Due in one year to five years	56,921,000
Due in five years to ten years	508,208,000
Due after ten years	1,748,950,000
Mortgage-backed securities	1,938,218,000
Asset-backed securities	220,716,000
Amortized Cost	4,579,141,000	3,487,296,000
Available-for-sale, Fair Value [Abstract]
Due in one year or less	106,120,000
Due in one year to five years	56,821,000
Due in five years to ten years	517,678,000
Due after ten years	1,765,856,000
Mortgage-backed securities	1,967,981,000
Asset-backed securities	220,197,000
Fair Value	4,634,653,000	3,586,681,000
Securities held-to-maturity [Abstract]
Amortized Cost	989,398,000	1,028,550,000
Gross Unrealized Gains	25,817,000	38,272,000
Gross Unrealized Losses	808,000	291,000
Fair Value	1,014,407,000	1,066,531,000
Allowance for credit losses - securities held-to-maturity	(161,000)	(191,000)
HeldToMaturitySecurities, net of allowance for credit losses	989,237,000	1,028,359,000
Held-to-maturity, Amortized Cost [Abstract]
Due in one year or less	0
Due in one year to five years	1,409,000
Due in five years to ten years	5,676,000
Due after ten years	982,313,000
Mortgage-backed securities	0
Asset-backed securities	0
Amortized Cost	989,398,000	1,028,550,000
Held-to-maturity, Fair Value [Abstract]
Due in one year or less	0
Due in one year to five years	1,472,000
Due in five years to ten years	5,734,000
Due after ten years	1,007,201,000
Mortgage-backed securities	0
Asset-backed securities	0
Fair Value	1,014,407,000	1,066,531,000
U.S. Treasury securities
Securities available-for-sale [Abstract]
Amortized Cost	144,387,000	82,199,000
Gross Unrealized Gains	0	10,000
Gross Unrealized Losses	230,000	0
Fair Value	144,157,000	82,209,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	144,387,000	82,199,000
Available-for-sale, Fair Value [Abstract]
Fair Value	144,157,000	82,209,000
U.S. government agency securities
Securities available-for-sale [Abstract]
Amortized Cost	423,481,000	74,916,000
Gross Unrealized Gains	1,566,000	1,547,000
Gross Unrealized Losses	2,992,000	60,000
Fair Value	422,055,000	76,403,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	423,481,000	74,916,000
Available-for-sale, Fair Value [Abstract]
Fair Value	422,055,000	76,403,000
Mortgage-backed securities
Securities available-for-sale [Abstract]
Amortized Cost	1,938,218,000	1,623,759,000
Gross Unrealized Gains	41,663,000	67,759,000
Gross Unrealized Losses	11,900,000	2,327,000
Fair Value	1,967,981,000	1,689,191,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	1,938,218,000	1,623,759,000
Available-for-sale, Fair Value [Abstract]
Fair Value	1,967,981,000	1,689,191,000
State and municipal securities
Securities available-for-sale [Abstract]
Amortized Cost	1,733,063,000	1,411,288,000
Gross Unrealized Gains	38,130,000	44,559,000
Gross Unrealized Losses	11,545,000	12,484,000
Fair Value	1,759,648,000	1,443,363,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	1,733,063,000	1,411,288,000
Available-for-sale, Fair Value [Abstract]
Fair Value	1,759,648,000	1,443,363,000
Securities held-to-maturity [Abstract]
Amortized Cost	989,398,000	1,028,550,000
Gross Unrealized Gains	25,817,000	38,272,000
Gross Unrealized Losses	808,000	291,000
Fair Value	1,014,407,000	1,066,531,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	989,398,000	1,028,550,000
Held-to-maturity, Fair Value [Abstract]
Fair Value	1,014,407,000	1,066,531,000
Asset-backed securities
Securities available-for-sale [Abstract]
Amortized Cost	220,716,000	177,878,000
Gross Unrealized Gains	214,000	715,000
Gross Unrealized Losses	733,000	657,000
Fair Value	220,197,000	177,936,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	220,716,000	177,878,000
Available-for-sale, Fair Value [Abstract]
Fair Value	220,197,000	177,936,000
Corporate notes and other
Securities available-for-sale [Abstract]
Amortized Cost	119,276,000	117,256,000
Gross Unrealized Gains	3,306,000	2,632,000
Gross Unrealized Losses	1,967,000	2,309,000
Fair Value	120,615,000	117,579,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	119,276,000	117,256,000
Available-for-sale, Fair Value [Abstract]
Fair Value	$ 120,615,000	$ 117,579,000

Securities- Unrealized Losses (

Securities- Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,670,744	$ 407,150
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	21,564	4,277
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	384,332	464,283
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	8,357	13,560
Total investments with an unrealized loss, fair value	2,055,076	871,433
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	29,921	17,837
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	132,157	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	230	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total investments with an unrealized loss, fair value	132,157	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	230	0
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	195,921	9,962
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,552	38
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	14,807	6,091
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	440	22
Total investments with an unrealized loss, fair value	210,728	16,053
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	2,992	60
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	633,938	165,696
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8,630	1,772
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	114,968	35,997
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,270	555
Total investments with an unrealized loss, fair value	748,906	201,693
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	11,900	2,327
State and municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	523,859	175,115
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	9,138	2,220
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	222,884	345,435
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	2,961	10,264
Total investments with an unrealized loss, fair value	746,743	520,550
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	12,099	12,484
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	166,457	46,399
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	592	207
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	6,703	52,840
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	141	450
Total investments with an unrealized loss, fair value	173,160	99,239
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	733	657
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	18,412	9,978
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	422	40
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	24,970	23,920
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	1,545	2,269
Total investments with an unrealized loss, fair value	43,382	33,898
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	$ 1,967	$ 2,309

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 23,058,461		$ 23,058,461		$ 22,424,501
Percentage of loan portfolio as commercial loan	76.20%		76.20%
Risk rated loans	$ 1,000		$ 1,000
Percentage of credit exposure to risk based capital	25.00%		25.00%
Loans and other extensions of credit granted to directors, executive officers, and their related entities	$ 9,500		$ 9,500		10,700
Amount drawn from loans and other extensions of credit granted	6,000		6,000		6,800
Commercial loans held-for-sale	49,121		49,121		31,200
Mortgage loans held-for-sale	42,000		42,000		67,800
Loans sold			1,300,000	$ 1,300,000
Gain (Loss) on Sale of Mortgage Loans	7,800	$ 19,500	28,180	$ 47,655
Paycheck Protection Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 708,700		$ 708,700		$ 1,800,000
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of credit exposure to risk based capital	89.30%		89.30%		89.00%
Non-owner occupied commercial real estate and multifamily loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of credit exposure to risk based capital	252.40%		252.40%		264.00%

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 23,058,461	$ 22,424,501
Loan losses, allowance	268,635	285,050
Loans and Leases Receivable, Net Amount	22,789,826	22,139,451
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,954,519	2,802,227
Commercial real estate - Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,219,207	5,203,384
Consumer real estate – mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,540,439	3,099,172
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,096,961	2,901,746
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,788,153	8,038,457
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 459,182	$ 379,515

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Loan Classification by Risk Rating Category (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021		$ 6,926,319
2020		4,921,513
2019		3,177,240
2018		1,592,757
2017		991,221
Prior		1,390,440
Revolving Loans		4,058,971
Total		23,058,461	$ 22,424,501
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		6,773,052
2020		4,509,141
2019		3,013,371
2018		1,535,678
2017		912,394
Prior		1,332,430
Revolving Loans		3,970,469
Total		22,046,535
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		117,297
2020		376,707
2019		145,688
2018		47,518
2017		64,235
Prior		36,197
Revolving Loans		38,351
Total		825,993
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	30,799
2020	[1]	21,348
2019	[1]	13,165
2018	[1]	7,402
2017	[1]	12,714
Prior	[1]	9,421
Revolving Loans	[1]	44,392
Total	[1]	139,241
Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		5,171
2020		14,317
2019		5,016
2018		2,159
2017		1,878
Prior		12,392
Revolving Loans		5,759
Total		46,692
Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Commercial real estate - Owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021		717,350
2020		779,973
2019		425,656
2018		360,155
2017		245,192
Prior		345,931
Revolving Loans		80,262
Total		2,954,519	2,802,227
Commercial real estate - Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		709,613
2020		752,522
2019		396,290
2018		346,730
2017		230,544
Prior		338,358
Revolving Loans		74,332
Total		2,848,389
Commercial real estate - Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		3,021
2020		18,041
2019		23,304
2018		11,191
2017		8,013
Prior		5,408
Revolving Loans		1,463
Total		70,441
Commercial real estate - Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	4,065
2020	[1]	9,243
2019	[1]	5,929
2018	[1]	2,010
2017	[1]	6,062
Prior	[1]	1,843
Revolving Loans	[1]	4,403
Total	[1]	33,555
Commercial real estate - Owner occupied | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		651
2020		167
2019		133
2018		224
2017		573
Prior		322
Revolving Loans		64
Total		2,134
Commercial real estate - Owner occupied | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Commercial real estate - Non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021		1,330,376
2020		1,361,262
2019		938,945
2018		490,406
2017		466,819
Prior		560,222
Revolving Loans		71,177
Total		5,219,207	5,203,384
Commercial real estate - Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		1,224,463
2020		1,011,088
2019		878,712
2018		458,453
2017		409,687
Prior		527,093
Revolving Loans		71,142
Total		4,580,638
Commercial real estate - Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		102,390
2020		339,589
2019		58,766
2018		28,326
2017		55,434
Prior		28,615
Revolving Loans		35
Total		613,155
Commercial real estate - Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	3,523
2020	[1]	10,582
2019	[1]	1,372
2018	[1]	2,992
2017	[1]	1,698
Prior	[1]	3,346
Revolving Loans	[1]	0
Total	[1]	23,513
Commercial real estate - Non-owner occupied | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		3
2019		95
2018		635
2017		0
Prior		1,168
Revolving Loans		0
Total		1,901
Commercial real estate - Non-owner occupied | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Consumer real estate – mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
2021		955,249
2020		622,689
2019		347,803
2018		220,161
2017		120,280
Prior		322,335
Revolving Loans		951,922
Total		3,540,439	3,099,172
Consumer real estate – mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		954,840
2020		621,396
2019		344,081
2018		218,698
2017		118,796
Prior		309,150
Revolving Loans		946,762
Total		3,513,723
Consumer real estate – mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		120
2020		0
2019		0
2018		697
2017		64
Prior		977
Revolving Loans		0
Total		1,858
Consumer real estate – mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	0
2020	[1]	881
2019	[1]	0
2018	[1]	0
2017	[1]	449
Prior	[1]	1,834
Revolving Loans	[1]	2,886
Total	[1]	6,050
Consumer real estate – mortgage | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		289
2020		412
2019		3,722
2018		766
2017		971
Prior		10,374
Revolving Loans		2,274
Total		18,808
Consumer real estate – mortgage | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
2021		1,151,241
2020		987,068
2019		719,998
2018		180,268
2017		26,433
Prior		16,077
Revolving Loans		15,876
Total		3,096,961	2,901,746
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		1,148,364
2020		982,922
2019		710,816
2018		180,189
2017		26,367
Prior		15,867
Revolving Loans		15,876
Total		3,080,401
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		2,877
2020		3,280
2019		8,653
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		14,810
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	0
2020	[1]	0
2019	[1]	12
2018	[1]	20
2017	[1]	0
Prior	[1]	74
Revolving Loans	[1]	0
Total	[1]	106
Construction and land development | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		866
2019		517
2018		59
2017		66
Prior		136
Revolving Loans		0
Total		1,644
Construction and land development | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2021		2,603,178
2020		1,075,723
2019		737,168
2018		339,080
2017		129,570
Prior		143,816
Revolving Loans		2,759,618
Total		7,788,153	8,038,457
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		2,566,847
2020		1,046,415
2019		675,802
2018		328,921
2017		124,091
Prior		139,904
Revolving Loans		2,682,244
Total		7,564,224
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		8,889
2020		15,797
2019		54,965
2018		7,304
2017		724
Prior		1,197
Revolving Loans		36,853
Total		125,729
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	23,211
2020	[1]	642
2019	[1]	5,852
2018	[1]	2,380
2017	[1]	4,505
Prior	[1]	2,324
Revolving Loans	[1]	37,103
Total	[1]	76,017
Commercial and industrial | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		4,231
2020		12,869
2019		549
2018		475
2017		250
Prior		391
Revolving Loans		3,418
Total		22,183
Commercial and industrial | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Consumer and other
Financing Receivable, Credit Quality Indicator [Line Items]
2021		168,925
2020		94,798
2019		7,670
2018		2,687
2017		2,927
Prior		2,059
Revolving Loans		180,116
Total		459,182	$ 379,515
Consumer and other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		168,925
2020		94,798
2019		7,670
2018		2,687
2017		2,909
Prior		2,058
Revolving Loans		180,113
Total		459,160
Consumer and other | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		0
Consumer and other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	0
2020	[1]	0
2019	[1]	0
2018	[1]	0
2017	[1]	0
Prior	[1]	0
Revolving Loans	[1]	0
Total	[1]	0
Consumer and other | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		18
Prior		1
Revolving Loans		3
Total		22
Consumer and other | Doubtful-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		0
2017		0
Prior		0
Revolving Loans		0
Total		$ 0
[1]	Potential problem loans represent those loans with a well-defined weakness and where information about possible credit problems of borrowers has caused management to have doubts about the borrower's ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by Pinnacle Bank's primary regulators for loans classified as substandard, excluding troubled debt restructurings. Potential problem loans, which are not included in nonaccrual loans, amounted to approximately $139.2 million at September 30, 2021, compared to $173.5 million at December 31, 2020.

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Financing Receivables Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 23,058,461	$ 22,424,501
30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	14,049	31,881
60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	14,601	15,721
90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	13,652	17,443
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	42,302	65,045
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	23,016,159	22,359,456
Commercial real estate - Owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,954,519	2,802,227
Commercial real estate - Owner occupied | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	2,519	934
Commercial real estate - Owner occupied | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	2,672
Commercial real estate - Owner occupied | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	1,618	1,860
Commercial real estate - Owner occupied | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,137	5,466
Commercial real estate - Owner occupied | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,950,382	2,796,761
Commercial real estate - Non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	5,219,207	5,203,384
Commercial real estate - Non-owner occupied | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	3,375	726
Commercial real estate - Non-owner occupied | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	359	6,220
Commercial real estate - Non-owner occupied | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	1,317	3,861
Commercial real estate - Non-owner occupied | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,051	10,807
Commercial real estate - Non-owner occupied | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,214,156	5,192,577
Consumer real estate – mortgage
Financing Receivable, Past Due [Line Items]
Loans	3,540,439	3,099,172
Consumer real estate – mortgage | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	2,593	8,859
Consumer real estate – mortgage | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	7,599	328
Consumer real estate – mortgage | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	5,265	6,274
Consumer real estate – mortgage | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	15,457	15,461
Consumer real estate – mortgage | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,524,982	3,083,711
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	3,096,961	2,901,746
Construction and land development | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	776	278
Construction and land development | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	645	418
Construction and land development | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	648	736
Construction and land development | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,069	1,432
Construction and land development | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,094,892	2,900,314
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	7,788,153	8,038,457
Commercial and industrial | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	3,410	20,278
Commercial and industrial | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	5,302	5,801
Commercial and industrial | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	4,557	4,408
Commercial and industrial | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	13,269	30,487
Commercial and industrial | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,774,884	8,007,970
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans	459,182	379,515
Consumer and other | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,376	806
Consumer and other | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	696	282
Consumer and other | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	247	304
Consumer and other | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,319	1,392
Consumer and other | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 456,863	$ 378,123

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 273,747	$ 285,372	$ 285,050	$ 94,777
Impact of adopting ASC 326				38,102
Charged-off loans	(12,289)	(15,029)	(39,319)	(35,724)
Recovery of previously charged-off loans	3,008	1,973	8,673	7,128
Provision for Loan and Lease Losses	4,169	16,329	14,231	184,362
Ending Balance	268,635	288,645	268,635	288,645
Commercial real estate - Owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	19,311	38,803	23,298	13,406
Impact of adopting ASC 326				264
Charged-off loans	(543)	(186)	(1,246)	(1,247)
Recovery of previously charged-off loans	80	47	1,158	272
Provision for Loan and Lease Losses	411	(2,238)	(3,951)	23,731
Ending Balance	19,259	36,426	19,259	36,426
Commercial real estate - Non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	79,081	68,426	79,132	19,963
Impact of adopting ASC 326				(4,740)
Charged-off loans	(201)	(222)	(672)	(485)
Recovery of previously charged-off loans	326	432	486	631
Provision for Loan and Lease Losses	(5,180)	1,223	(4,920)	54,490
Ending Balance	74,026	69,859	74,026	69,859
Consumer real estate – mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	30,445	29,358	33,304	8,054
Impact of adopting ASC 326				21,029
Charged-off loans	(94)	(907)	(626)	(3,033)
Recovery of previously charged-off loans	777	297	1,690	971
Provision for Loan and Lease Losses	(103)	3,201	(3,343)	4,928
Ending Balance	31,025	31,949	31,025	31,949
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	33,487	41,897	42,408	12,662
Impact of adopting ASC 326				(3,144)
Charged-off loans	0	0	(367)	0
Recovery of previously charged-off loans	32	7	269	100
Provision for Loan and Lease Losses	(659)	(682)	(9,450)	31,604
Ending Balance	32,860	41,222	32,860	41,222
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	102,101	100,610	98,423	36,112
Impact of adopting ASC 326				23,040
Charged-off loans	(10,167)	(12,984)	(32,890)	(27,982)
Recovery of previously charged-off loans	997	799	2,848	3,798
Provision for Loan and Lease Losses	8,485	13,783	33,035	67,240
Ending Balance	101,416	102,208	101,416	102,208
Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9,322	6,278	8,485	3,595
Impact of adopting ASC 326				2,638
Charged-off loans	(1,284)	(730)	(3,518)	(2,977)
Recovery of previously charged-off loans	796	391	2,222	1,356
Provision for Loan and Lease Losses	1,215	1,042	2,860	2,369
Ending Balance	10,049	6,981	10,049	6,981
Unallocated
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0	0	985
Impact of adopting ASC 326				(985)
Charged-off loans	0	0	0	0
Recovery of previously charged-off loans	0	0	0	0
Provision for Loan and Lease Losses	0	0	0	0
Ending Balance	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Details on Allowance for Loan Losses and Recorded Investment by Loan Classification and Impairment Evaluation Method (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 50,018	$ 74,292
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	37,718	51,812
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,443	22,437
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	857	43
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,517	15,681
Commercial real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,517	15,681
Commercial real estate - Owner occupied | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	6,039	7,000
Commercial real estate - Non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	6,039	7,000
Commercial real estate - Non-owner occupied | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Non-owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer real estate – mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	23,530	27,082
Consumer real estate – mortgage | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	23,530	27,082
Consumer real estate – mortgage | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer real estate – mortgage | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	2,632	2,049
Construction and land development | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	2,632	2,049
Construction and land development | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Construction and land development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	12,281	22,476
Commercial and industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial and industrial | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,443	22,437
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	838	39
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	19	4
Consumer and other | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer and other | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 19	$ 4

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Nonaccrual and Past Due Greater than 90 Days (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	$ 46,692	$ 73,836
Financing Receivable, Nonaccrual, No Allowance	17,538	36,537
Financing Receivable, 90 Days or More Past Due, Still Accruing	1,914	2,362
Commercial real estate - Owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	2,134	10,231
Financing Receivable, Nonaccrual, No Allowance	0	5,985
Financing Receivable, 90 Days or More Past Due, Still Accruing	306	0
Commercial real estate - Non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	1,901	5,219
Financing Receivable, Nonaccrual, No Allowance	0	1,522
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Consumer real estate – mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	18,808	22,191
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	549	273
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	1,645	1,953
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	22,182	34,238
Financing Receivable, Nonaccrual, No Allowance	17,538	29,030
Financing Receivable, 90 Days or More Past Due, Still Accruing	812	1,785
Consumer and other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	22	4
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 247	$ 304

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Recorded Investment, Principal Balance and Related Allowance (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Interest Income, Cash Basis Method	$ 0	$ 0	$ 0	$ 0
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	689,000	$ 910,000	2,100,000	$ 2,100,000
Currently performing impaired loans	$ 26,000,000		$ 26,000,000		$ 51,700,000

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings performing as of restructure date	$ 2,400		$ 2,500
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Consumer real estate – mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts		1
Pre Modification Outstanding Recorded Investment		$ 807
Post Modification Outstanding Recorded Investment, net of related allowance		$ 807

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Industry Classification System (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Lessors of nonresidential buildings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	$ 3,694,063
Unfunded Commitments	1,366,385
Total exposure	5,060,448	$ 4,442,712
Lessors of residential buildings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	1,377,334
Unfunded Commitments	923,992
Total exposure	2,301,326	2,126,246
Hotels (except Casino Hotels) and Motels
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	936,734
Unfunded Commitments	53,999
Total exposure	990,733	1,039,259
New Housing For-Sale Builders
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	542,968
Unfunded Commitments	893,927
Total exposure	$ 1,436,895	$ 1,124,302

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 9,700,000		$ 9,700,000		$ 9,700,000
Unrecognized Tax Benefits, Period Increase (Decrease)	0	$ 0	0	$ 0
Interest and penalties	$ 0	$ 0	$ 0	$ 0
Effective income tax rate (as percent)	19.40%	19.30%	18.90%	15.20%
Federal and State income tax statutory rate (as percent)			26.14%	26.14%
Excess tax benefit	$ 334,000	$ (85,000)	$ 2,200,000	$ 505,000
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount				$ 22,400,000

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Off-Balance Sheet, Credit Loss, Liability	$ 22.5	$ 23.2
Commitments
Loss Contingencies [Line Items]
Amount of commitment	11,400
Home Equity Line of Credit
Loss Contingencies [Line Items]
Amount of commitment	$ 1,300
Standby letter of credit
Loss Contingencies [Line Items]
Expiry period of standby letter of credit, maximum	2 years
Amount of commitment	$ 242.3

Stock Options and Restricted _3

Stock Options and Restricted Shares - Narrative (Details) - USD ($) $ in Thousands	Jul. 31, 2015	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 6,766	$ 5,669	$ 5,399	$ 4,443	$ 4,148	$ 5,501	$ 17,834	$ 14,092
Remaining Share-Based Compensation on Unvested Restricted Stock Awards		$ 52,900						$ 52,900
Weighted Average Remaining Period of Sharebased Compensation Expense								1 year 10 months 6 days
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuances (in shares)		1,900,000						1,900,000
CapitalMark Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuances (in shares)		0						0
Shares acquired in period (in shares)	858,000

Stock Options and Restricted _4

Stock Options and Restricted Shares - Common Stock Options (Details) - Common stock options $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares		Dec. 31, 2020USD ($)$ / sharesshares
Number
Outstanding, beginning balance (in shares)	101,769
Granted (in shares)	0
Exercised (in shares)	(31,451)
Forfeited (in shares)	(497)
Outstanding, ending balance (in shares)	69,821		101,769
Additional disclosures
Options exercisable (in shares)	69,821
Weighted-average exercise price of options outstanding (in dollars per share) | $ / shares	$ 23.97		$ 23.46
Weighted-average contractual remaining term for options outstanding	1 year 3 months 10 days		1 year 10 months 9 days
Aggregate intrinsic value | $	$ 4,895	[1]	$ 4,169	[2]
Weighted- average exercise price of options exercisable (in dollars per share) | $ / shares	$ 23.97
Weighted-average contractual remaining term for options exercisable	1 year 3 months 10 days
Aggregate intrinsic value of options exercisable | $	$ 4,895	[1]
[1]	The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $94.08 per common share at September 30, 2021 for the 69,821 options that were in-the-money at September 30, 2021.
[2]	The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $64.40 per common share at December 31, 2020 for the 101,769 options that were in-the-money at December 31, 2020.

Stock Options and Restricted _5

Stock Options and Restricted Shares - Unvested Restricted Awards (Details) - Restricted stock	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Number
Unvested, beginning of period (in shares)	594,669
Shares awarded (in shares)	225,481
Restrictions lapsed and shares released to associates/directors (in shares)	(179,410)
Shares forfeited (in shares)	(30,912)
Unvested, end of period (in shares)	609,828
Grant Date Weighted-Average Cost
Unvested, beginning of period (in dollars per share) | $ / shares	$ 56.97
Unvested, end of period (in dollars per share) | $ / shares	$ 63.35

Stock Options and Restricted _6

Stock Options and Restricted Shares - Restricted Shares Awarded (Details)	9 Months Ended
	Sep. 30, 2021shares
Time Based Awards | Associates
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	213,651	[1],[2]
Restrictions lapsed and shares released to participants	139	[1],[2]
Shares Forfeited by participants	11,248	[1],[2],[3]
Shares unvested	202,172	[1],[2]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Withheld For Taxes By Associates Leadership Team and Directors	92	[1],[2]
Time Based Awards | Associates | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years	3 years
Time Based Awards | Associates | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years	5 years
Outside Director Awards | Outside directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years	1 year	[1],[4]
Shares awarded	11,830	[1],[4]
Restrictions lapsed and shares released to participants	0	[1],[4]
Shares Forfeited by participants	0	[1],[3],[4]
Shares unvested	11,830	[1],[4]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Withheld For Taxes By Associates Leadership Team and Directors	0	[1],[4]
[1]	Groups include employees (referred to as associates above) and outside directors. When the restricted shares are awarded, a participant receives voting rights and forfeitable dividend rights with respect to the shares, but is not able to transfer the shares until the restrictions have lapsed. Once the restrictions lapse, the participant is taxed on the value of the award and may elect to sell some shares (or have Pinnacle Financial withhold some shares) to pay the applicable income taxes associated with the award. Alternatively, the recipient can pay the withholding taxes in cash. For time-based vesting restricted share awards, dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination. For awards to Pinnacle Financial's directors, dividends are placed into escrow until the forfeiture restrictions on such shares lapse.
[2]	The forfeiture restrictions on these restricted share awards lapse in equal annual installments on the anniversary date of the grant.
[3]	These shares represent forfeitures resulting from recipients whose employment or board membership was terminated during the year-to-date period ended September 30, 2021. Any dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination or will not be distributed from escrow, as applicable.
[4]	Restricted share awards are issued to the outside members of the board of directors in accordance with their board compensation plan. Restrictions lapse on March 1, 2022 based on each individual board member meeting attendance goals for the various board and board committee meetings to which each member was scheduled to attend.

Stock Options and Restricted _7

Stock Options and Restricted Shares - Performance Unit Awards Outstanding (Details) - shares		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Named Executive Officers (NEOs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Forfeited by participants		199,633
2021 Performance Unit Award | Tranche 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)	[1]	0 years
Subsequent holding period per tranche (in years)	[1]	0 years
2021 Performance Unit Award | Named Executive Officers (NEOs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[1],[2]	89,234
2021 Performance Unit Award | Named Executive Officers (NEOs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[1],[2]	214,155
2021 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[1]	45,240
2020 Performance Unit Award | Tranche 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		3 years
2020 Performance Unit Award | Tranche 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		2 years
2020 Performance Unit Award | Tranche 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		1 year
2020 Performance Unit Award | Named Executive Officers (NEOs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	136,137
2020 Performance Unit Award | Named Executive Officers (NEOs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	204,220
2020 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded		59,648
2019 Performance Unit Award | Tranche 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		3 years
2019 Performance Unit Award | Tranche 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		2 years
2019 Performance Unit Award | Tranche 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		1 year
2019 Performance Unit Award | Named Executive Officers (NEOs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	166,211
2019 Performance Unit Award | Named Executive Officers (NEOs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	249,343
2019 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded		52,244
2018 Performance Unit Award | Tranche 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		3 years
2018 Performance Unit Award | Tranche 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		2 years
2018 Performance Unit Award | Tranche 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		1 year
2018 Performance Unit Award | Named Executive Officers (NEOs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	96,878
2018 Performance Unit Award | Named Executive Officers (NEOs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	145,339
2018 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded		25,990
2017 Performance Unit Award | Tranche 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		3 years
2017 Performance Unit Award | Tranche 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		2 years
2017 Performance Unit Award | Tranche 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period per tranche (in years)		2 years
Subsequent holding period per tranche (in years)		1 year
2017 Performance Unit Award | Named Executive Officers (NEOs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	72,537
2017 Performance Unit Award | Named Executive Officers (NEOs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[2]	109,339
2017 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded		24,916
2016 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded		134,274
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation		46,655
2015 Performance Unit Award | Leadership Team other than NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded			129,723
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			43,996
Time Based Awards | Named Executive Officers (NEOs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years		3 years
Shares awarded		56,864
Restrictions lapsed and shares released to participants		89
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Withheld For Taxes By Associates Leadership Team and Directors		39
Shares Forfeited by participants	[3]	368
Shares unvested		56,368
Time Based Awards | Associates
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	[4],[5]	213,651
Restrictions lapsed and shares released to participants	[4],[5]	139
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Withheld For Taxes By Associates Leadership Team and Directors	[4],[5]	92
Shares Forfeited by participants	[4],[5],[6]	11,248
Shares unvested	[4],[5]	202,172
Time Based Awards | Associates | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years		3 years
Time Based Awards | Associates | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period in years		5 years
[1]	Performance stock unit awards granted in 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the period noted in the table, if the performance criterion included in the applicable performance unit award agreement are met.
[2]	The named executive officers are awarded a range of awards that may be earned based on attainment of goals between a target level of performance and a maximum level of performance.
[3]	These shares represent forfeitures resulting from recipients whose employment was terminated during the year-to-date period ended September 30, 2021. Dividend equivalents are held in escrow for award recipients for dividends paid prior to the forfeiture restrictions lapsing. Such dividend equivalents are not released from escrow if an award is forfeited.
[4]	Groups include employees (referred to as associates above) and outside directors. When the restricted shares are awarded, a participant receives voting rights and forfeitable dividend rights with respect to the shares, but is not able to transfer the shares until the restrictions have lapsed. Once the restrictions lapse, the participant is taxed on the value of the award and may elect to sell some shares (or have Pinnacle Financial withhold some shares) to pay the applicable income taxes associated with the award. Alternatively, the recipient can pay the withholding taxes in cash. For time-based vesting restricted share awards, dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination. For awards to Pinnacle Financial's directors, dividends are placed into escrow until the forfeiture restrictions on such shares lapse.
[5]	The forfeiture restrictions on these restricted share awards lapse in equal annual installments on the anniversary date of the grant.
[6]	These shares represent forfeitures resulting from recipients whose employment or board membership was terminated during the year-to-date period ended September 30, 2021. Any dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination or will not be distributed from escrow, as applicable.

Derivative Instruments - Non-he

Derivative Instruments - Non-hedge Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 1,500,000		$ 1,500,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	3,269,178		3,269,178		$ 3,131,832
Estimated Fair Value	(690)		(690)		(1,317)
Derivative, Gain (Loss) on Derivative, Net	126	$ (135)	627	$ (1,272)
Not Designated as Hedging Instrument | Assets
Derivative [Line Items]
Notional Amount	1,634,589		1,634,589		1,565,916
Estimated Fair Value	56,797		56,797		101,602
Not Designated as Hedging Instrument | Liabilities
Derivative [Line Items]
Notional Amount	1,634,589		1,634,589		1,565,916
Estimated Fair Value	$ (57,487)		$ (57,487)		$ (102,919)

Derivative Instruments - Hedge

Derivative Instruments - Hedge Derivatives (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 34,300,000
Net (gain) loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax	(4,338,000)	$ 156,000	$ (6,526,000)	$ 1,858,000
Notional Amount	1,500,000,000		1,500,000,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			10,600,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	3,269,178,000		3,269,178,000		$ 3,131,832,000
Cash flow hedge | Hedging derivative
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	0	(3,026,000)	$ (15,034,000)	67,202,000
Cash flow hedge | Hedging derivative | Asset derivatives
Derivative [Line Items]
Description of Location of Interest Rate Cash Flow Hedge Derivative on Balance Sheet			Other assets		Other assets
Forecasted Notional Amount	0		$ 0		$ 1,500,000,000
Cash Flow Hedges Derivative Instruments at Fair Value, Net	0		0		124,585,000
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	0	(3,506,000)	(15,034,000)	68,161,000
Cash flow hedge | Hedging derivative | Liability derivatives
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	0	480,000	0	(959,000)
Fair value hedge | Hedging derivative
Derivative [Line Items]
Forecasted Notional Amount	1,031,490,000		1,031,490,000		708,931,000
Fair Value Hedge Assets	(36,790,000)		(36,790,000)		(67,314,000)
Fair value hedge | Hedging derivative | Securities
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	3,850,000	4,996,000	30,524,000	(36,436,000)
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge	(3,850,000)	(4,996,000)	(30,524,000)	36,436,000
Derivative Instruments and Hedges, Assets	1,198,990,000		1,198,990,000		841,543,000
Fair Value Hedging Adjustment	36,790,000		36,790,000		67,314,000
Fair value hedge | Hedging derivative | Securities | Asset derivatives
Derivative [Line Items]
Forecasted Notional Amount	$ 464,762,000		$ 464,762,000		$ 231,421,000
Description of Location of Interest Rate Fair Value Hedge Derivative on Balance Sheet			Other assets		Other assets
Weighted Average Remaining Maturity			5 years 7 months 28 days
Pay Rate (as percent)	0.54%		0.54%
Derivative, Type of Interest Rate Paid on Swap			Federal Funds
Fair Value Hedge Assets	$ 11,989,000		$ 11,989,000		$ 4,696,000
Fair value hedge | Hedging derivative | Securities | Liability derivatives
Derivative [Line Items]
Forecasted Notional Amount	$ 566,728,000		$ 566,728,000		$ 477,510,000
Description of Location of Interest Rate Fair Value Hedge Derivative on Balance Sheet			Other liabilities		Other liabilities
Weighted Average Remaining Maturity			5 years 1 month 24 days
Pay Rate (as percent)	2.71%		2.71%
Derivative, Type of Interest Rate Paid on Swap			3 month LIBOR/Federal Funds
Fair Value Hedge Assets	$ (48,779,000)		$ (48,779,000)		$ (72,010,000)
Fair value hedge | Hedging derivative | Securities | LIBOR
Derivative [Line Items]
Forecasted Notional Amount	477,500,000		477,500,000
Fair value hedge | Hedging derivative | Securities | Federal Funds Rate
Derivative [Line Items]
Forecasted Notional Amount	554,000,000		554,000,000
Fair value hedge | Hedging derivative | Loans
Derivative [Line Items]
Amortization expense, reduction to interest income on loans	$ 726,000	$ 1,200,000	$ 2,600,000	$ 3,300,000

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Recurring
Assets, Fair Value Disclosure [Abstract]
U.S. Treasury securities		$ 144,157	$ 82,209
U.S. government agency securities		422,055	76,403
Mortgage-backed securities		1,967,981	1,689,191
State and municipal securities		1,759,648	1,443,363
Agency-backed securities		220,197	177,936
Corporate notes and other		120,615	117,579
Total investment securities available-for-sale		4,634,653	3,586,681
Other Investments		119,647	73,395
Other assets		73,230	242,470
Total assets at fair value		4,827,530	3,902,546
Liabilities at fair value: [Abstract]
Other liabilities		105,953	177,025
Total liabilities at fair value		105,953	177,025
Recurring | Quoted market prices in an active market (Level 1)
Assets, Fair Value Disclosure [Abstract]
U.S. Treasury securities		0	0
U.S. government agency securities		0	0
Mortgage-backed securities		0	0
State and municipal securities		0	0
Agency-backed securities		0	0
Corporate notes and other		0	0
Total investment securities available-for-sale		0	0
Other Investments		0	0
Other assets		0	0
Total assets at fair value		0	0
Liabilities at fair value: [Abstract]
Other liabilities		0	0
Total liabilities at fair value		0	0
Recurring | Models with significant observable market parameters (Level 2)
Assets, Fair Value Disclosure [Abstract]
U.S. Treasury securities		144,157	82,209
U.S. government agency securities		422,055	76,403
Mortgage-backed securities		1,967,981	1,689,191
State and municipal securities		1,758,776	1,427,866
Agency-backed securities		220,197	177,936
Corporate notes and other		120,615	117,579
Total investment securities available-for-sale		4,633,781	3,571,184
Other Investments		25,206	25,636
Other assets		73,230	242,470
Total assets at fair value		4,732,217	3,839,290
Liabilities at fair value: [Abstract]
Other liabilities		105,953	177,025
Total liabilities at fair value		105,953	177,025
Recurring | Models with significant unobservable market parameters (Level 3)
Assets, Fair Value Disclosure [Abstract]
U.S. Treasury securities		0	0
U.S. government agency securities		0	0
Mortgage-backed securities		0	0
State and municipal securities		872	15,497
Agency-backed securities		0	0
Corporate notes and other		0	0
Total investment securities available-for-sale		872	15,497
Other Investments		94,441	47,759
Other assets		0	0
Total assets at fair value		95,313	63,256
Liabilities at fair value: [Abstract]
Other liabilities		0	0
Total liabilities at fair value		0	0
Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Total assets at fair value		48,384	56,155
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		8,415	12,360
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	39,969	43,795
Nonrecurring | Quoted market prices in an active market (Level 1)
Assets, Fair Value Disclosure [Abstract]
Total assets at fair value		0	0
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	0
Nonrecurring | Models with significant observable market parameters (Level 2)
Assets, Fair Value Disclosure [Abstract]
Total assets at fair value		0	0
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	0
Nonrecurring | Models with significant unobservable market parameters (Level 3)
Assets, Fair Value Disclosure [Abstract]
Total assets at fair value		48,384	56,155
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		8,415	12,360
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	$ 39,969	$ 43,795
[1]	The carrying values of collateral dependent loans at September 30, 2021 and December 31, 2020 are net of valuation allowances of $1.9 million and $3.5 million, respectively

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Rollforward of Balance Sheet Amounts Within Level 3 Valuation Hierarchy (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward]
Transfers out of Level 3			$ 0
Recurring | Other investments
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward]
Fair value, beginning of period	$ 78,755	$ 40,612	47,759	$ 38,156
Total realized gains included in income	8,603	456	19,000	4
Changes in unrealized gains/losses included in other comprehensive income	0	0	0	0
Purchases	10,974	1,095	36,530	4,822
Issuances	0	0	0	0
Settlements	(3,891)	(957)	(8,848)	(1,776)
Transfers out of Level 3	0	0	0	0
Fair value, end of period	94,441	41,206	94,441	41,206
Total realized gains included in income	8,603	456	19,000	4
Recurring | Available-for-sale Securities
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward]
Fair value, beginning of period	840	15,295	15,497	15,903
Total realized gains included in income	2	27	1,300	82
Changes in unrealized gains/losses included in other comprehensive income	30	151	(3,138)	631
Purchases	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	(12,787)	(1,143)
Transfers out of Level 3	0	0	0	0
Fair value, end of period	872	15,473	872	15,473
Total realized gains included in income	$ 2	$ 27	$ 1,300	$ 82

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Financial assets:
Securities purchased with agreement to resell		$ 500,000	$ 0
Securities held-to-maturity		1,014,407	1,066,531
Quoted market prices in an active market (Level 1)
Financial assets:
Securities purchased with agreement to resell		0
Securities held-to-maturity		0	0
Loans, net		0	0
Consumer loans held-for-sale		0	0
Commercial loans held-for-sale		0	0
Financial liabilities:
Deposits and securities sold under agreements to repurchase		0	0
Federal Home Loan Bank advances		0	0
Subordinated debt and other borrowings		0	0
Off-balance sheet instruments:
Commitments to extend credit	[1]	0	0
Models with significant observable market parameters (Level 2)
Financial assets:
Securities purchased with agreement to resell		0
Securities held-to-maturity		1,014,407	1,066,531
Loans, net		0	0
Consumer loans held-for-sale		55,763	89,625
Commercial loans held-for-sale		49,556	31,841
Financial liabilities:
Deposits and securities sold under agreements to repurchase		0	0
Federal Home Loan Bank advances		0	0
Subordinated debt and other borrowings		0	0
Off-balance sheet instruments:
Commitments to extend credit	[1]	0	0
Models with significant unobservable market parameters (Level 3)
Financial assets:
Securities purchased with agreement to resell		486,315
Securities held-to-maturity		0	0
Loans, net		22,804,075	22,407,546
Consumer loans held-for-sale		0	0
Commercial loans held-for-sale		0	0
Financial liabilities:
Deposits and securities sold under agreements to repurchase		28,558,710	26,929,142
Federal Home Loan Bank advances		938,917	1,189,035
Subordinated debt and other borrowings		531,587	677,521
Off-balance sheet instruments:
Commitments to extend credit	[1]	24,255	24,887
Carrying/ Notional Amount
Financial assets:
Securities purchased with agreement to resell		500,000
Securities held-to-maturity		989,237	1,028,359
Loans, net		22,789,826	22,139,451
Consumer loans held-for-sale		55,273	87,821
Commercial loans held-for-sale		49,121	31,200
Financial liabilities:
Deposits and securities sold under agreements to repurchase		29,518,047	27,833,739
Federal Home Loan Bank advances		888,493	1,087,927
Subordinated debt and other borrowings		542,712	670,575
Off-balance sheet instruments:
Commitments to extend credit	[1]	11,627,405	9,692,607
Estimated Fair Value
Financial assets:
Securities purchased with agreement to resell	[2]	486,315
Securities held-to-maturity	[2]	1,014,407	1,066,531
Loans, net	[2]	22,804,075	22,407,546
Consumer loans held-for-sale	[2]	55,763	89,625
Commercial loans held-for-sale	[2]	49,556	31,841
Financial liabilities:
Deposits and securities sold under agreements to repurchase	[2]	28,558,710	26,929,142
Federal Home Loan Bank advances	[2]	938,917	1,189,035
Subordinated debt and other borrowings	[2]	531,587	677,521
Off-balance sheet instruments:
Commitments to extend credit	[1],[2]	$ 24,255	$ 24,887
[1]	At the end of each quarter, Pinnacle Financial evaluates the inherent risks of the outstanding off-balance sheet commitments, including both commitments for unfunded loans and standby letters of credit. In making this evaluation, Pinnacle Financial utilizes credit loss expectations on funded loans from our allowance for credit losses methodology and evaluates the probability that the outstanding commitment will eventually become a funded loan. As a result, at September 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $22.5 million and $23.2 million, respectively, representing expected credit losses on off-balance sheet commitments, which are reflected in the estimated fair values of the related commitments. Also included in the fair values at September 30, 2021 and December 31, 2020 are unamortized fees related to these commitments of $1.8 million and $1.7 million, respectively.
[2]	Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction.

Regulatory Matters (Details)

Regulatory Matters (Details) $ / shares in Units, shares in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021USD ($)$ / shares	Sep. 30, 2020shares	Sep. 30, 2021USD ($)$ / shares	Dec. 31, 2020USD ($)$ / shares
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Preceding period of retained earnings used in calculation of dividend payable				2 years
Retained earnings		$ 1,748,491,000		$ 1,748,491,000	$ 1,407,723,000
Quarterly common stock dividend (in dollar per share) | $ / shares		$ 0.18		$ 0.18	$ 0.16
Depositary Shares | shares			9,000
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares		$ 16.88
Preferred Stock, Dividend Per Depositary Share		$ 0.422
Pinnacle Financial
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash dividends paid to Pinnacle Financial by Pinnacle Bank				$ 66,500,000
Actual
Total capital to risk weighted assets		3,915,561,000		3,915,561,000	$ 3,678,405,000
Tier I capital to risk weighted assets		3,156,777,000		3,156,777,000	2,803,541,000
Common equity Tier 1 capital to risk weighted assets		2,939,528,000		2,939,528,000	2,586,292,000
Tier I capital to average assets	[1]	$ 3,156,777,000		$ 3,156,777,000	$ 2,803,541,000
Actual
Total capital to risk weighted assets (as percent)		0.140		0.140	0.143
Tier I capital to risk weighted assets (as percent)		0.113		0.113	0.109
Common equity Tier 1 capital to risk weighted assets		0.105		0.105	0.100
Tier I capital to average assets (as percent)	[1]	0.093		0.093	0.086
Minimum Capital Requirement
Total capital to risk weighted assets		$ 2,235,652,000		$ 2,235,652,000	$ 2,063,352,000
Tier I capital to risk weighted assets		1,676,739,000		1,676,739,000	1,547,514,000
Common equity Tier 1 capital to risk weighted assets		1,257,554,000		1,257,554,000	1,160,635,000
Tier I capital to average assets	[1]	$ 1,355,712,000		$ 1,355,712,000	$ 1,298,756,000
Minimum Capital Requirement
Total capital to risk weighted assets (as percent)		0.080		0.080	0.080
Tier I capital to risk weighted assets (as percent)		0.060		0.060	0.060
Common Equity Tier I capital to risk weighted assets (as percent)		0.045		0.045	0.045
Tier I capital to average assets (as percent)	[1]	0.040		0.040	0.040
Minimum To Be Well-Capitalized
Total capital to risk weighted assets		$ 2,794,565,000		$ 2,794,565,000	$ 2,579,190,000
Tier I capital to risk weighted assets		$ 2,235,652,000		$ 2,235,652,000	$ 2,063,352,000
Minimum To Be Well-Capitalized
Total capital to risk weighted assets (as percent)		0.100		0.100	0.100
Tier I capital to risk weighted assets (as percent)		0.080		0.080	0.080
Pinnacle Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Retained earnings		$ 773,100,000		$ 773,100,000
Actual
Total capital to risk weighted assets		3,466,596,000		3,466,596,000	$ 3,259,538,000
Tier I capital to risk weighted assets		3,256,812,000		3,256,812,000	2,933,674,000
Common equity Tier 1 capital to risk weighted assets		3,256,689,000		3,256,689,000	2,933,551,000
Tier I capital to average assets	[1]	$ 3,256,812,000		$ 3,256,812,000	$ 2,933,674,000
Actual
Total capital to risk weighted assets (as percent)		0.125		0.125	0.127
Tier I capital to risk weighted assets (as percent)		0.117		0.117	0.114
Common equity Tier 1 capital to risk weighted assets		0.117		0.117	0.114
Tier I capital to average assets (as percent)	[1]	0.096		0.096	0.091
Minimum Capital Requirement
Total capital to risk weighted assets		$ 2,223,799,000		$ 2,223,799,000	$ 2,055,892,000
Tier I capital to risk weighted assets		1,667,849,000		1,667,849,000	1,541,919,000
Common equity Tier 1 capital to risk weighted assets		1,250,887,000		1,250,887,000	1,156,439,000
Tier I capital to average assets	[1]	$ 1,350,660,000		$ 1,350,660,000	$ 1,294,033,000
Minimum Capital Requirement
Total capital to risk weighted assets (as percent)		0.080		0.080	0.080
Tier I capital to risk weighted assets (as percent)		0.060		0.060	0.060
Common Equity Tier I capital to risk weighted assets (as percent)		0.045		0.045	0.045
Tier I capital to average assets (as percent)	[1]	0.040		0.040	0.040
Minimum To Be Well-Capitalized
Total capital to risk weighted assets		$ 2,779,749,000		$ 2,779,749,000	$ 2,569,865,000
Tier I capital to risk weighted assets		2,223,799,000		2,223,799,000	2,055,892,000
Common equity Tier 1 capital to risk weighted assets		1,806,837,000		1,806,837,000	1,670,412,000
Tier I capital to average assets	[1]	$ 1,688,325,000		$ 1,688,325,000	$ 1,617,541,000
Minimum To Be Well-Capitalized
Total capital to risk weighted assets (as percent)		0.100		0.100	0.100
Tier I capital to risk weighted assets (as percent)		0.080		0.080	0.080
Common Equity Tier I capital to risk weighted assets (as percent)		0.065		0.065	0.065
Tier I capital to average assets (as percent)	[1]	0.050		0.050	0.050
[1]	(*) Average assets for the above calculations were based on the most recent quarter.

Other borrowings (Details)

Other borrowings (Details) $ in Thousands		Jul. 30, 2021USD ($)	Sep. 30, 2021USD ($)subsidiary	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Number of wholly owned subsidiaries | subsidiary			12
Term			30 years
Total Debt Outstanding			$ 542,712	$ 670,575
Debt issuance costs and fair value adjustments			(10,283)
Loans			23,058,461	22,424,501
Repayments of Subordinated Debt		$ 130,000
Paycheck Protection Program [Member]
Debt Instrument [Line Items]
Loans			708,700	$ 1,800,000
Paycheck Protection Program Liquidity Facility
Debt Instrument [Line Items]
Line of Credit, Current			$ 0
Pinnacle Statutory Trust I
Debt Instrument [Line Items]
Date Established			Dec. 29, 2003
Maturity			Dec. 30, 2033
Total Debt Outstanding			$ 10,310
Interest Rate (as percent)			2.92%
Coupon Structure			30-day LIBOR + 2.80%
Pinnacle Statutory Trust II
Debt Instrument [Line Items]
Date Established			Sep. 15, 2005
Maturity			Sep. 30, 2035
Total Debt Outstanding			$ 20,619
Interest Rate (as percent)			1.53%
Coupon Structure			30-day LIBOR + 1.40%
Pinnacle Statutory Trust III
Debt Instrument [Line Items]
Date Established			Sep. 7, 2006
Maturity			Sep. 30, 2036
Total Debt Outstanding			$ 20,619
Interest Rate (as percent)			1.78%
Coupon Structure			30-day LIBOR + 1.65%
Pinnacle Statutory Trust IV
Debt Instrument [Line Items]
Date Established			Oct. 31, 2007
Maturity			Sep. 30, 2037
Total Debt Outstanding			$ 30,928
Interest Rate (as percent)			2.97%
Coupon Structure			30-day LIBOR + 2.85%
BNC Capital Trust I
Debt Instrument [Line Items]
Date Established			Apr. 3, 2003
Maturity			Apr. 15, 2033
Total Debt Outstanding			$ 5,155
Interest Rate (as percent)			3.38%
Coupon Structure			30-day LIBOR + 3.25%
BNC Capital Trust II
Debt Instrument [Line Items]
Date Established			Mar. 11, 2004
Maturity			Apr. 7, 2034
Total Debt Outstanding			$ 6,186
Interest Rate (as percent)			2.98%
Coupon Structure			30-day LIBOR + 2.85%
BNC Capital Trust III
Debt Instrument [Line Items]
Date Established			Sep. 23, 2004
Maturity			Sep. 23, 2034
Total Debt Outstanding			$ 5,155
Interest Rate (as percent)			2.53%
Coupon Structure			30-day LIBOR + 2.40%
BNC Capital Trust IV
Debt Instrument [Line Items]
Date Established			Sep. 27, 2006
Maturity			Dec. 31, 2036
Total Debt Outstanding			$ 7,217
Interest Rate (as percent)			1.83%
Coupon Structure			30-day LIBOR + 1.70%
Valley Financial Trust I
Debt Instrument [Line Items]
Date Established			Jun. 26, 2003
Maturity			Jun. 26, 2033
Total Debt Outstanding			$ 4,124
Interest Rate (as percent)			3.23%
Coupon Structure			30-day LIBOR + 3.10%
Valley Financial Trust II
Debt Instrument [Line Items]
Date Established			Sep. 26, 2005
Maturity			Dec. 15, 2035
Total Debt Outstanding			$ 7,217
Interest Rate (as percent)			1.61%
Coupon Structure			30-day LIBOR + 1.49%
Valley Financial Trust III
Debt Instrument [Line Items]
Date Established			Dec. 15, 2006
Maturity			Jan. 30, 2037
Total Debt Outstanding			$ 5,155
Interest Rate (as percent)			1.86%
Coupon Structure			30-day LIBOR + 1.73%
Southcoast Capital Trust III
Debt Instrument [Line Items]
Date Established			Aug. 5, 2005
Maturity			Sep. 30, 2035
Total Debt Outstanding			$ 10,310
Interest Rate (as percent)			1.63%
Coupon Structure			30-day LIBOR + 1.50%
Pinnacle Financial Subordinated Notes
Debt Instrument [Line Items]
Date Established			Nov. 16, 2016
Maturity			Nov. 16, 2026
Total Debt Outstanding	[1]		$ 120,000
Interest Rate (as percent)	[1]		5.25%
Pinnacle Financial Notes 2019
Debt Instrument [Line Items]
Date Established			Sep. 11, 2019
Maturity			Sep. 15, 2029
Total Debt Outstanding	[2]		$ 300,000
Interest Rate (as percent)	[2]		4.13%
[1]	Migrates to three month LIBOR + 3.884% beginning November 16, 2021 through the end of the term.
[2]	Migrates to three month LIBOR + 2.775% beginning September 15, 2024 through the end of the term.