Pinnacle Financial Partners (PNFP) 10-Q 6 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 30, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 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		76,107,958
Entity Central Index Key	0001115055
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
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	Jun. 30, 2021	Dec. 31, 2020
Assets [Abstract]
Cash and noninterest-bearing due from banks	$ 159,863	$ 203,296
Restricted cash	155,275	223,788
Interest-bearing due from banks	2,576,237	3,522,224
Federal funds sold and other	0	12,141
Cash and cash equivalents	2,891,375	3,961,449
Securities purchased with agreement to resell	500,000	0
Securities available-for-sale, at fair value	4,331,070	3,586,681
Securities held-to-maturity (fair value of $1.0 billion and $1.1 billion, net of allowance for credit losses of $198 and $191 at June 30, 2021 and Dec. 31, 2020, respectively)	995,838	1,028,359
Consumer loans held-for-sale	56,968	87,821
Commercial loans held-for-sale	25,843	31,200
Loans	22,897,935	22,424,501
Less allowance for credit losses	(273,747)	(285,050)
Loans, net	22,624,188	22,139,451
Premises and equipment, net	287,992	290,001
Equity method investment	320,167	308,556
Accrued interest receivable	99,664	104,078
Goodwill	1,819,811	1,819,811
Core deposits and other intangible assets	37,963	42,336
Other real estate owned	9,602	12,360
Other assets	1,411,828	1,520,757
Total assets	35,412,309	34,932,860
Deposits:
Noninterest-bearing	8,926,200	7,392,325
Interest-bearing	5,581,651	5,689,095
Savings and money market accounts	11,079,165	11,099,523
Time	2,630,587	3,524,632
Total deposits	28,217,603	27,705,575
Securities sold under agreements to repurchase	177,661	128,164
Federal Home Loan Bank advances	888,304	1,087,927
Subordinated debt and other borrowings	671,994	670,575
Accrued interest payable	15,776	24,934
Other liabilities	339,740	411,074
Total liabilities	30,311,078	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 June 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 June 30, 2021 and Dec. 31, 2020, respectively	76,088	75,850
Additional paid-in capital	3,032,338	3,028,063
Retained earnings	1,629,580	1,407,723
Accumulated other comprehensive income, net of taxes	146,099	175,849
Total shareholders' equity	5,101,231	4,904,611
Liabilities and Equity	$ 35,412,309	$ 34,932,860

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Securities held-to-maturity, fair value	$ 1,030,639,000	$ 1,066,531,000
Allowance for credit losses - securities held-to-maturity	$ (198,000)	$ (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)	76,088,000	75,850,000
Common stock, shares outstanding (in shares)	76,088,000	75,850,000

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income:
Loans, including fees	$ 232,788	$ 226,281	$ 460,160	$ 462,701
Securities:
Taxable	8,359	9,589	16,087	19,857
Tax-exempt	16,546	14,596	32,044	28,420
Federal funds sold and other	1,543	1,272	2,862	3,829
Total interest income	259,236	251,738	511,153	514,807
Interest expense:
Deposits	13,861	33,727	31,329	84,425
Securities sold under agreements to repurchase	56	94	128	209
Federal Home Loan Bank advances and other borrowings	12,094	17,260	23,601	35,964
Total interest expense	26,011	51,081	55,058	120,598
Net interest income	233,225	200,657	456,095	394,209
Provision for credit losses	2,834	68,332	10,069	168,221
Net interest income after provision for credit losses	230,391	132,325	446,026	225,988
Noninterest income:
Total noninterest income	98,207	72,954	190,916	143,331
Noninterest expense:
Salaries and employee benefits	110,824	73,887	213,552	154,367
Equipment and occupancy	23,321	22,026	46,541	43,004
Other real estate (income) expense, net	(657)	2,888	(670)	5,303
Marketing and other business development	2,652	2,142	5,001	5,393
Postage and supplies	2,115	2,070	3,921	4,060
Amortization of intangibles	2,167	2,479	4,373	4,999
Other noninterest expense	25,718	26,113	48,118	51,828
Total noninterest expense	166,140	131,605	320,836	268,954
Income before income taxes	162,458	73,674	316,106	100,365
Income tax expense	30,668	11,230	58,888	9,565
Net income	131,790	62,444	257,218	90,800
Preferred stock dividends	(3,798)	0	(7,596)	0
Net income available to common shareholders	$ 127,992	$ 62,444	$ 249,622	$ 90,800
Per share information:
Basic net income per common share	$ 1.70	$ 0.83	$ 3.31	$ 1.20
Diluted net income per common share	$ 1.69	$ 0.83	$ 3.30	$ 1.20
Weighted average common shares outstanding:
Basic	75,481,198	75,210,869	75,427,340	75,507,136
Diluted	75,809,974	75,323,259	75,735,763	75,645,768
Service charges on deposit accounts
Noninterest income:
Total noninterest income	$ 8,906	$ 6,910	$ 17,213	$ 15,942
Investment services
Noninterest income:
Total noninterest income	8,997	5,971	17,188	15,210
Insurance sales commissions
Noninterest income:
Total noninterest income	2,406	2,231	5,631	5,471
Gain on mortgage loans sold, net
Noninterest income:
Total noninterest income	6,700	19,619	20,366	28,202
Investment gains (losses) on sales, net
Noninterest income:
Total noninterest income	366	(128)	366	335
Trust fees
Noninterest income:
Total noninterest income	5,062	3,958	9,749	8,128
Income from equity method investment
Noninterest income:
Total noninterest income	32,071	17,208	61,021	32,800
Other noninterest income
Noninterest income:
Total noninterest income	$ 33,699	$ 17,185	$ 59,382	$ 37,243

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 131,790,000	$ 62,444,000	$ 257,218,000	$ 90,800,000
Other comprehensive income (loss), net of tax:
Change in fair value on available-for-sale securities, net of tax	28,242,000	36,007,000	(5,130,000)	68,879,000
Change in fair value of cash flow hedges, net of tax	(631,000)	4,555,000	(18,373,000)	65,639,000
Accretion of net unrealized gains on securities transferred from available-for-sale to held-to-maturity, net of tax	(2,098,000)	(1,514,000)	(3,789,000)	(1,981,000)
Net (gain) loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax	(2,692,000)	(123,000)	(2,188,000)	1,702,000
Net (gain) loss on sale of investment securities reclassified from other comprehensive income into net income, net of tax	(270,000)	95,000	(270,000)	(247,000)
Total other comprehensive income (loss), net of tax	22,551,000	39,020,000	(29,750,000)	133,992,000
Total comprehensive income	$ 154,341,000	$ 101,464,000	$ 227,468,000	$ 224,792,000

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	9,649
Net income	90,800
Other comprehensive income (loss)	133,992
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
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	$ 0.18
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	11,068
Net income	257,218
Other comprehensive income (loss)	(29,750)
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
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

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net income	$ 257,218	$ 90,800
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization/accretion of premium/discount on securities	25,413	16,092
Depreciation, amortization and accretion	27,057	21,031
Provision for credit losses	10,069	168,221
Gain on mortgage loans sold, net	(20,366)	(28,202)
Investment gains on sales, net	(366)	(335)
Stock-based compensation expense	11,068	9,649
Deferred tax expense (benefit)	4,427	(24,038)
Losses (gains) on dispositions of other real estate and other investments	(806)	5,033
Income from equity method investment	(61,021)	(32,800)
Dividends received from equity method investment	49,409	7,957
Excess tax benefit from stock compensation	(1,867)	(590)
Gain on commercial loans sold, net	(2,356)	(1,221)
Decrease (increase) in other assets	24,016	(173,328)
Increase (decrease) in other liabilities	(83,266)	83,745
Net cash provided by operating activities	297,560	185,198
Activities in securities available-for-sale:
Purchases	(1,075,927)	(810,119)
Sales	2,240	100,055
Maturities, prepayments and calls	280,795	186,492
Activities in securities held-to-maturity:
Maturities, prepayments and calls	23,300	8,948
Increase in securities purchased under agreements to resell	(500,000)	0
Increase in loans, net	(492,984)	(2,738,112)
Purchases of software, premises and equipment	(10,451)	(18,663)
Proceeds from Sale of Property, Plant, and Equipment	281	0
Proceeds from sale of other real estate	4,183	5,130
Proceeds from bank owned life insurance settlements	952	1,690
Proceeds from derivative instruments	99,710	35,680
Proceeds from sale of FHLB stock	10,329	0
Purchase of trade name	0	(1,000)
Increase in other investments	(29,636)	(26,813)
Net cash used in investing activities	(1,687,208)	(3,256,712)
Financing activities:
Net increase in deposits	512,121	5,340,992
Net increase in securities sold under agreements to repurchase	49,497	68,199
Federal Home Loan Bank: Advances	0	762,472
Federal Home Loan Bank: Repayments/maturities	(200,000)	(1,037,518)
Advances of other borrowings, net of issuance costs	0	56,568
Repayments of other borrowings	0	(89,579)
Principal payments of finance lease obligation	(128)	(120)
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes	(3,764)	(2,488)
Exercise of common stock options, net of shares surrendered for taxes	(2,791)	(2,280)
Repurchase of common stock	0	(50,790)
Common stock dividends paid	(27,765)	(24,820)
Preferred stock dividends paid	(7,596)	0
Net cash provided by financing activities	319,574	5,238,268
Net increase (decrease) in cash, cash equivalents, and restricted cash	(1,070,074)	2,166,754
Cash, cash equivalents, and restricted cash, beginning of period	3,961,449	526,707
Cash, cash equivalents, and restricted cash, end of period	2,891,375	2,693,461
Commercial Loan
Adjustments to reconcile net income to net cash provided by operating activities:
Loans held-for-sale originated	(288,031)	(180,238)
Loans held-for-sale sold	295,743	182,844
Consumer Loan
Adjustments to reconcile net income to net cash provided by operating activities:
Loans held-for-sale originated	(1,117,635)	(955,401)
Loans held-for-sale sold	$ 1,168,854	$ 995,979

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 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. It is reasonably possible Pinnacle Financial's estimate of the allowance for credit losses and determination of impairment of goodwill or intangible assets could change as a result of the continued impact of the COVID-19 pandemic on the economy. The resulting change in these estimates could be material to Pinnacle Financial's consolidated financial statements. 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 six months ended June 30, 2021 and 2020 was as follows (in thousands): For the six months ended 2021 2020 Cash Transactions: Interest paid $ 63,683 $ 127,807 Income taxes paid, net 56,073 23,749 Operating lease payments 7,133 6,750 Noncash Transactions: Loans charged-off to the allowance for credit losses 27,029 20,695 Loans foreclosed upon and transferred to other real estate owned 620 2,442 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 4,771 2,928 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 six months ended June 30, 2021 and 2020 (in thousands, except per share data): Three months ended Six months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Basic net income per common share $ 1.70 $ 0.83 $ 3.31 $ 1.20 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Dilutive common shares contingently issuable 329 112 308 139 Weighted average diluted common shares outstanding 75,810 75,323 75,736 75,646 Diluted net income per common share $ 1.69 $ 0.83 $ 3.30 $ 1.20 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 No. 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. 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 June 30, 2021 through the date of the issued financial statements. On July 30, 2021, Pinnacle Bank redeemed the $130.0 million aggregate principal amount of subordinated notes as more fully disclosed in Note 11. Other Borrowings . Other than the above-noted redemption, no other subsequent events were noted.

Equity method investment

Equity method investment	6 Months Ended
	Jun. 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 June 30, 2021 and December 31, 2020 and results of operations as of and for the three and six months ended June 30, 2021 and 2020, were as follows (in thousands): As of June 30, 2021 December 31, 2020 Assets $ 1,882,147 $ 1,330,317 Liabilities 1,573,156 1,088,135 Equity interests 308,991 242,182 Total liabilities and equity $ 1,882,147 $ 1,330,317 For the three months ended For the six months ended 2021 2020 2021 2020 Revenues $ 178,984 $ 92,790 $ 336,607 $ 190,734 Net income $ 62,353 $ 37,674 $ 120,915 $ 70,145 At June 30, 2021, technology, trade name and customer relationship intangibles, net of related amortization, totaled $7.2 million compared to $7.6 million as of December 31, 2020. Amortization expense of $188,000 and $376,000, respectively, was included for the three and six months ended June 30, 2021 compared to $293,000 and $587,000, respectively, for the same periods in the prior year. Accretion income of $395,000 and $846,000, respectively, was included in the three and six months ended June 30, 2021 compared to $541,000 and $1.1 million, respectively, for the same periods in the prior year. During the three and six months ended June 30, 2021, Pinnacle Financial and Pinnacle Bank received dividends of $39.4 million and $49.4 million, respectively, from BHG in the aggregate. During the three months ended June 30, 2020, Pinnacle Financial and Pinnacle Bank received no dividends from BHG. During the six months ended June 30, 2020, Pinnacle Financial and Pinnacle Bank received dividends from BHG of $8.0 million 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 six months ended June 30, 2021, Pinnacle Bank purchased $50.3 million and $124.9 million, respectively, of loans from BHG 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 4.75% per annum. No loans were purchased from BHG by Pinnacle Bank for the three and six months ended June 30, 2020.

Securities

Securities	6 Months Ended
	Jun. 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 June 30, 2021 and December 31, 2020 are summarized as follows (in thousands): Amortized Gross Gross Fair June 30, 2021: Securities available-for-sale: U.S. Treasury securities $ 111,475 $ 5 $ 11 $ 111,469 U.S. government agency securities 421,833 3,214 2,191 422,856 Mortgage-backed securities 1,854,519 50,747 6,018 1,899,248 State and municipal securities 1,535,461 48,999 3,747 1,580,713 Asset-backed securities 200,200 318 430 200,088 Corporate notes and other 114,878 3,422 1,604 116,696 $ 4,238,366 $ 106,705 $ 14,001 $ 4,331,070 Securities held-to-maturity: State and municipal securities $ 996,036 $ 35,035 $ 432 $ 1,030,639 $ 996,036 $ 35,035 $ 432 $ 1,030,639 Allowance for credit losses - securities held-to-maturity (198) Securities held-to-maturity, net of allowance for credit losses $ 995,838 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 June 30, 2021, approximately $676.5 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 June 30, 2021, repurchase agreements comprised of secured borrowings totaled $177.7 million and were secured by $177.7 million of pledged U.S. government agency 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 June 30, 2021 by contractual maturity are 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 June 30, 2021: Amortized Fair Amortized Fair Due in one year or less $ 112,691 $ 112,686 $ — $ — Due in one year to five years 33,685 33,706 1,409 1,470 Due in five years to ten years 496,477 508,583 6,609 6,704 Due after ten years 1,540,794 1,576,759 988,018 1,022,465 Mortgage-backed securities 1,854,519 1,899,248 — — Asset-backed securities 200,200 200,088 — — $ 4,238,366 $ 4,331,070 $ 996,036 $ 1,030,639 At June 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 June 30, 2021 U.S. Treasury securities $ 59,973 $ 11 $ — $ — $ 59,973 $ 11 U.S. government agency securities 111,928 2,172 5,497 19 117,425 2,191 Mortgage-backed securities 361,860 5,059 54,747 959 416,607 6,018 State and municipal securities 117,715 1,035 167,184 2,712 284,899 3,747 Asset-backed securities 85,178 285 6,859 145 92,037 430 Corporate notes 4,990 10 24,813 1,594 29,803 1,604 Total temporarily-impaired securities $ 741,644 $ 8,572 $ 259,100 $ 5,429 $ 1,000,744 $ 14,001 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 June 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 past twelve-month pe riods ended June 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 June 30, 2021, Pinnacle Financial had approximately $14.0 million in unrealized losses on approximately $1.0 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 June 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 June 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 June 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 June 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 June 30, 2021 and 2020. At June 30, 2021 and December 31, 2020, the estimated allowance for credit losses on these securities was $198,000 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 June 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 six months ended June 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 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	6 Months Ended
	Jun. 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 $1.4 billion and $1.8 billion granted under the Paycheck Protection Program are included in this category as of June 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 June 30, 2021 and December 31, 2020 were as follows: June 30, 2021 December 31, 2020 Commercial real estate: Owner occupied $ 2,817,689 $ 2,802,227 Non-owner occupied 5,368,804 5,203,384 Consumer real estate – mortgage 3,335,537 3,099,172 Construction and land development 2,791,611 2,901,746 Commercial and industrial 8,144,170 8,038,457 Consumer and other 440,124 379,515 Subtotal $ 22,897,935 $ 22,424,501 Allowance for credit losses (273,747) (285,050) Loans, net $ 22,624,188 $ 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 June 30, 2021, approximately 76.5% 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 June 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 June 30, 2021 (in thousands): June 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Commercial real estate - Owner occupied Pass $ 372,905 $ 795,798 $ 431,840 $ 361,214 $ 247,024 $ 406,461 $ 72,504 $ 2,687,746 Special Mention 3,691 19,290 23,524 15,127 9,778 6,844 1,350 79,604 Substandard (1) 1,564 14,187 7,322 3,217 10,268 6,874 4,404 47,836 Substandard-nonaccrual — 171 139 777 1,036 380 — 2,503 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - owner occupied $ 378,160 $ 829,446 $ 462,825 $ 380,335 $ 268,106 $ 420,559 $ 78,258 $ 2,817,689 Commercial real estate - Non-owner occupied Pass $ 840,396 $ 1,036,343 $ 965,640 $ 526,914 $ 443,070 $ 606,855 $ 69,031 $ 4,488,249 Special Mention 58,047 436,107 111,495 47,077 100,497 98,996 35 852,254 Substandard (1) 5,212 8,460 1,603 3,044 1,693 5,578 — 25,590 Substandard-nonaccrual — 3 280 559 — 1,869 — 2,711 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - Non-owner occupied $ 903,655 $ 1,480,913 $ 1,079,018 $ 577,594 $ 545,260 $ 713,298 $ 69,066 $ 5,368,804 Consumer real estate – mortgage Pass $ 575,556 $ 671,443 $ 383,987 $ 251,640 $ 133,519 $ 344,836 $ 950,101 $ 3,311,082 Special Mention 120 — 58 705 517 967 — 2,367 Substandard (1) — 1,000 — — — 1,854 1,760 4,614 Substandard-nonaccrual 306 179 2,425 678 1,166 10,357 2,363 17,474 Doubtful-nonaccrual — — — — — — — — Total Consumer real estate – mortgage $ 575,982 $ 672,622 $ 386,470 $ 253,023 $ 135,202 $ 358,014 $ 954,224 $ 3,335,537 Construction and land development Pass $ 616,758 $ 1,061,748 $ 801,545 $ 221,560 $ 28,096 $ 17,426 $ 12,308 $ 2,759,441 Special Mention 2,754 16,057 10,125 — — 1,788 1 30,725 Substandard (1) — 349 13 23 — 113 — 498 Substandard-nonaccrual — 288 517 64 70 8 — 947 Doubtful-nonaccrual — — — — — — — — Total Construction and land development $ 619,512 $ 1,078,442 $ 812,200 $ 221,647 $ 28,166 $ 19,335 $ 12,309 $ 2,791,611 Commercial and industrial Pass $ 2,294,532 $ 1,658,111 $ 803,144 $ 404,779 $ 184,911 $ 154,233 $ 2,389,598 $ 7,889,308 Special Mention 6,053 28,372 61,369 3,399 796 2,348 32,350 134,687 Substandard (1) 22,445 11,546 7,209 11,408 3,475 2,013 32,636 90,732 Substandard-nonaccrual 625 16,822 4,335 485 465 648 6,063 29,443 Doubtful-nonaccrual — — — — — — — — Total Commercial and industrial $ 2,323,655 $ 1,714,851 $ 876,057 $ 420,071 $ 189,647 $ 159,242 $ 2,460,647 $ 8,144,170 Consumer and other Pass $ 131,826 $ 105,264 $ 9,940 $ 3,614 $ 4,120 $ 3,211 $ 182,122 $ 440,097 Special Mention — — — — — — — — Substandard (1) — — — — — — — — Substandard-nonaccrual — — — — 22 2 3 27 Doubtful-nonaccrual — — — — — — — — Total Consumer and other $ 131,826 $ 105,264 $ 9,940 $ 3,614 $ 4,142 $ 3,213 $ 182,125 $ 440,124 Total loans Pass $ 4,831,973 $ 5,328,707 $ 3,396,096 $ 1,769,721 $ 1,040,740 $ 1,533,022 $ 3,675,664 $ 21,575,923 Special Mention 70,665 499,826 206,571 66,308 111,588 110,943 33,736 1,099,637 Substandard (1) 29,221 35,542 16,147 17,692 15,436 16,432 38,800 169,270 Substandard-nonaccrual 931 17,463 7,696 2,563 2,759 13,264 8,429 53,105 June 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Doubtful-nonaccrual — — — — — — — — Total loans $ 4,932,790 $ 5,881,538 $ 3,626,510 $ 1,856,284 $ 1,170,523 $ 1,673,661 $ 3,756,629 $ 22,897,935 (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 $169.3 million at June 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 June 30, 2021 and December 31, 2020 (in thousands): June 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 $ 1,301 $ 902 $ 997 $ 3,200 $ 2,814,489 $ 2,817,689 Non-owner occupied 1,753 278 1,966 3,997 5,364,807 5,368,804 Consumer real estate – mortgage 1,997 6,128 3,370 11,495 3,324,042 3,335,537 Construction and land development — — 135 135 2,791,476 2,791,611 Commercial and industrial 3,002 1,634 5,511 10,147 8,134,023 8,144,170 Consumer and other 752 451 286 1,489 438,635 440,124 Total $ 8,805 $ 9,393 $ 12,265 $ 30,463 $ 22,867,472 $ 22,897,935 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 six months ended June 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 June 30, 2021: Balance at March 31, 2021 $ 22,065 $ 80,519 $ 30,199 $ 37,642 $ 101,076 $ 9,380 $ — $ 280,881 Charged-off loans (6) (332) (161) — (10,972) (1,284) — (12,755) Recovery of previously charged-off loans 476 147 548 200 645 771 — 2,787 Provision for credit losses on loans (3,224) (1,253) (141) (4,355) 11,352 455 — 2,834 Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Three months ended June 30, 2020: Balance at March 31, 2020 $ 23,634 $ 32,114 $ 32,998 $ 38,911 $ 88,060 $ 6,748 $ — $ 222,465 Charged-off loans — (2) (1,196) — (6,734) (1,070) — (9,002) Recovery of previously charged-off loans 80 106 484 50 2,249 648 — 3,617 Provision for credit losses on loans 15,089 36,208 (2,928) 2,936 17,035 (48) — 68,292 Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372 Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Six months ended June 30, 2021: Balance at December 31, 2020 $ 23,298 $ 79,132 $ 33,304 $ 42,408 $ 98,423 $ 8,485 $ — $ 285,050 Charged-off loans (703) (472) (532) (367) (22,721) (2,234) — (27,029) Recovery of previously charged-off loans 1,078 159 913 237 1,851 1,426 — 5,664 Provision for credit losses on loans (4,362) 262 (3,240) (8,791) 24,548 1,645 — 10,062 Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Six months ended June 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 (1,061) (263) (2,126) — (14,998) (2,247) — (20,695) Recovery of previously charged-off loans 225 199 674 93 2,997 967 — 5,155 Provision for credit losses on loans 25,969 53,267 1,727 32,286 53,459 1,325 — 168,033 Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372 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. At June 30, 2021 and December 31, 2020, a reasonable and supportable period of 18 months was utilized for all loan segments, followed by a 12 month straight line reversion to long term averages. 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 June 30, 2021 and December 31, 2020 (in thousands): Real Estate Business Assets Other Total June 30, 2021 Commercial real estate: Owner occupied $ 5,547 $ — $ — $ 5,547 Non-owner occupied 6,820 — — 6,820 Consumer real estate – mortgage 22,341 — — 22,341 Construction and land development 1,944 — — 1,944 Commercial and industrial — 11,634 289 11,923 Consumer and other — — 24 24 Total $ 36,652 $ 11,634 $ 313 $ 48,599 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 June 30, 2021 and December 31, 2020. Also presented is the balance of loans on nonaccrual status at June 30, 2021 for which there was no related allowance for credit losses recorded (in thousands): June 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 $ 2,503 $ — $ — $ 10,231 $ 5,985 $ — Non-owner occupied 2,711 — — 5,219 1,522 — Consumer real estate – mortgage 17,474 — — 22,191 — 273 Construction and land development 947 — 135 1,953 — — Commercial and industrial 29,443 23,750 1,390 34,238 29,030 1,785 Consumer and other 27 — 285 4 — 304 Total $ 53,105 $ 23,750 $ 1,810 $ 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 six months ended June 30, 2021 and 2020, respectively. Had these loans been on accruing status, an additional $776,000 and $1.1 million of interest income would have been recognized for the three and six months ended June 30, 2021 compared to an additional $854,000 and $1.6 million for the three and six months ended June 30, 2020, respectively. Approximately $39.5 million and $51.7 million of nonaccrual loans were performing pursuant to their contractual terms as of June 30, 2021 and December 31, 2020, respectively. At June 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 six months ended June 30, 2021. During the six months ended June 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 six months ended June 30, 2020 (in thousands): June 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 June 30, 2021 with the comparative exposures for December 31, 2020 (in thousands): June 30, 2021 Outstanding Principal Balances Unfunded Commitments Total exposure Total Exposure at December 31, 2020 Lessors of nonresidential buildings $ 3,587,877 $ 1,228,232 $ 4,816,109 $ 4,442,712 Lessors of residential buildings 1,376,546 887,899 2,264,445 2,126,246 Hotels (except Casino Hotels) and Motels 979,770 65,699 1,045,469 1,039,259 New Housing For-Sale Builders 493,082 814,372 1,307,454 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 June 30, 2021 and December 31, 2020, Pinnacle Bank’s construction and land development loans as a percentage of total risk-based capital were 80.1% 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 248.8% and 264.0% as of June 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 June 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 June 30, 2021, Pinnacle Bank had granted loans and other extensions of credit amounting to approximately $8.8 million to current directors, executive officers, and their related interests, of which $5.4 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 June 30, 2021 and December 31, 2020. At June 30, 2021, Pinnacle Financial had approximately $25.8 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. Residential Lending At June 30, 2021, Pinnacle Financial had approximately $37.3 million of mortgage loans held-for-sale compared to approximately $67.8 million at December 31, 2020. Total loan volumes sold during the six months ended June 30, 2021 were approximately $941.3 million compared to approximately $837.4 million for the six months ended June 30, 2020. During the three and six months ended June 30, 2021, Pinnacle Financial recognized $6.7 million and $20.4 million, respectively, in gains on the sale of these loans, net of commissions paid, compared to $19.6 million and $28.2 million, respectively, during the three and six months ended June 30, 2020. These 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 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	6 Months Ended
	Jun. 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 June 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 six month periods ended June 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 six months ended June 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 six months ended June 30, 2021 was 18.9% and 18.6%, respectively, compared to 15.2% and 9.5%, respectively, for the three and six months ended June 30, 2020. The difference between the effective tax rate and the federal and state income tax statutory rate of 26.14% at June 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
	Jun. 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 June 30, 2021, these commitments amounted to $10.6 billion, of which approximately $1.2 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 June 30, 2021, these commitments amounted to $243.8 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 June 30, 2021 and December 31, 2020, Pinnacle Financial had accrued $23.2 million 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 June 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	6 Months Ended
	Jun. 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 June 30, 2021, there were approximately 2.0 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 June 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 six months ended June 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 (17,777) Forfeited (497) Outstanding at June 30, 2021 83,495 $ 23.63 1.44 $ 5,399 (2) Options exercisable at June 30, 2021 83,495 $ 23.63 1.44 $ 5,399 (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 $88.29 per common share at June 30, 2021 for the 83,495 options that were in-the-money at June 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 six months ended June 30, 2021 is as follows: Number Grant Date Unvested at December 31, 2020 594,669 $ 56.97 Shares awarded 200,346 Restrictions lapsed and shares released to associates/directors (157,734) Shares forfeited (24,757) Unvested at June 30, 2021 612,524 $ 62.06 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 six months ended June 30, 2021. The table reflects the life-to-date activity for these awards: Grant Group (1) Vesting Period in years 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 - 5 188,516 89 60 8,280 180,087 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 June 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 six months ended June 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 June 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 June 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 six months ended June 30, 2021 and 2020, the restrictions associated with 133,041 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 46,332 and 43,996 shares being withheld to pay the taxes associated with the settlement of those shares. Additionally, during the six months ended June 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 six months ended June 30, 2021 was $5.7 million and $11.1 million, respectively, compared to $4.1 million and $9.6 million, respectively, for the three and six months ended June 30, 2020. As of June 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 $59.9 million. This expense, if the underlying units are earned, is expected to be recognized over a weighted-average period of 1.72 years.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 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 June 30, 2021 and December 31, 2020 is included in the following table (in thousands): June 30, 2021 December 31, 2020 Notional Estimated Notional Estimated Interest rate swap agreements: Assets $ 1,577,735 $ 66,074 $ 1,565,916 $ 101,602 Liabilities 1,577,735 (66,890) 1,565,916 (102,919) Total $ 3,155,470 $ (816) $ 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 six months ended June 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 June 30, Six Months Ended June 30, 2021 2020 2021 2020 Interest rate swap agreements Other noninterest income $ 51 $ (794) $ 501 $ (1,137) 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 June 30, 2021 and December 31, 2020 is as follows (in thousands): June 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 six months ended June 30, 2021 and 2020 were as follows, net of tax (in thousands): Amount of Gain (Loss) Recognized Three Months Ended June 30, Six Months Ended June 30, Asset derivatives 2021 2020 2021 2020 Interest rate floor - loans $ 240 $ 6,318 $ (15,034) $ 71,667 Liability derivatives Interest rate swaps - borrowings $ — $ 141 $ — $ (1,439) $ 240 $ 6,459 $ (15,034) $ 70,228 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 $2.7 million and $2.2 million, net of tax, were reclassified from accumulated other comprehensive income (loss) into net income during the three and six months ended June 30, 2021, respectively, compared to gains totaling $123,000 and losses totaling $1.7 million, net of tax, during the three and six months ended June 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 $12.5 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 June 30, 2021 and December 31, 2020 is as follows (in thousands): June 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 5.92 0.53% Federal Funds $ 457,284 $ 11,818 $ 231,421 $ 4,696 Liability derivatives Interest rate swaps - securities Other liabilities 5.40 2.68% 3 month LIBOR/Federal Funds $ 574,206 $ (52,458) $ 477,510 $ (72,010) $ 1,031,490 $ (40,640) $ 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 six months ended June 30, 2021 and 2020 were as follows (in thousands): Location of Gain (Loss) Amount of Gain (Loss) Recognized in Income Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Interest rate swaps - securities Interest income on securities $ (8,092) $ (2,559) $ 26,674 $ (41,432) Securities available-for-sale Interest income on securities $ 8,092 $ 2,559 $ (26,674) $ 41,432 The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at June 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 June 30, 2021 December 31, 2020 June 30, 2021 December 31, 2020 Line item on the balance sheet Securities available-for-sale $ 1,206,722 $ 841,543 $ 40,640 $ 67,314 During the three and six months ended June 30, 2021, amortization expense totaling $927,000 and $1.9 million, respectively, related to previously terminated fair value hedges was recognized as a reduction to interest income on loans compared to $1.0 million and $2.1 million during the three and six months ended June 30, 2020, respectively.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 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 ongoing reviews by senior investment managers. 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 June 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 June 30, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 111,469 $ — $ 111,469 $ — U.S. government agency securities 422,856 — 422,856 — Mortgage-backed securities 1,899,248 — 1,899,248 — State and municipal securities 1,580,713 — 1,579,873 840 Agency-backed securities 200,088 — 200,088 — Corporate notes and other 116,696 — 116,696 — Total investment securities available-for-sale 4,331,070 — 4,330,230 840 Other investments 104,039 — 25,284 78,755 Other assets 82,527 — 82,527 — Total assets at fair value $ 4,517,636 $ — $ 4,438,041 $ 79,595 Other liabilities $ 119,043 $ — $ 119,043 $ — Total liabilities at fair value $ 119,043 $ — $ 119,043 $ — 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 June 30, 2021 and December 31, 2020 (in thousands): June 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 $ 9,602 $ — $ — $ 9,602 Collateral dependent loans (1) 39,739 — — 39,739 Total $ 49,341 $ — $ — $ 49,341 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 June 30, 2021 and December 31, 2020 are net of valuation allowances of $2.2 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 six months ended June 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 six months ended June 30, 2021 and June 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 June 30, For the Six months ended June 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 $ 13,513 $ 62,129 $ 14,767 $ 39,756 $ 15,497 $ 47,759 $ 15,903 $ 38,156 Total realized gains (losses) included in income 1,256 6,957 27 (278) 1,298 10,397 55 (452) Changes in unrealized gains/losses included in other comprehensive income (1,293) — 501 — (3,168) — 480 — Purchases — 13,124 — 1,366 — 25,556 — 3,727 Issuances — — — — — — — — Settlements (12,636) (3,455) — (232) (12,787) (4,957) (1,143) (819) Transfers out of Level 3 — — — — — — — — Fair value, end of period $ 840 $ 78,755 $ 15,295 $ 40,612 $ 840 $ 78,755 $ 15,295 $ 40,612 Total realized gains (losses) included in income $ 1,256 $ 6,957 $ 27 $ (278) $ 1,298 $ 10,397 $ 55 $ (452) The following tables present the carrying amounts, estimated fair value and placement in the fair value hierarchy of Pinnacle Financial's financial instruments at June 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 June 30, 2021 Financial assets: Securities purchased with agreement to resell $ 500,000 $ 486,397 $ — $ — $ 486,397 Securities held-to-maturity 995,838 1,030,639 — 1,030,639 — Loans, net 22,624,188 22,629,233 — — 22,629,233 Consumer loans held-for-sale 56,968 57,810 — 57,810 — Commercial loans held-for-sale 25,843 26,225 — 26,225 — Financial liabilities: Deposits and securities sold under agreements to repurchase 28,395,264 27,472,418 — — 27,472,418 Federal Home Loan Bank advances 888,304 943,600 — — 943,600 Subordinated debt and other borrowings 671,994 662,942 — — 662,942 Off-balance sheet instruments: Commitments to extend credit (2) 10,648,545 25,031 — — 25,031 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 June 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $23.2 million, 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 June 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	6 Months Ended
	Jun. 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 six months ended June 30, 2021, Pinnacle Bank paid $23.3 million dividends to Pinnacle Financial. As of June 30, 2021, Pinnacle Bank could pay approximately $681.9 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 June 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 June 30, 2021 Total capital to risk weighted assets: Pinnacle Financial $ 3,897,968 14.5 % $ 2,145,542 8.0 % $ 2,681,928 10.0 % Pinnacle Bank $ 3,483,255 13.1 % $ 2,135,085 8.0 % $ 2,668,857 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 3,031,001 11.3 % $ 1,609,157 6.0 % $ 2,145,542 8.0 % Pinnacle Bank $ 3,165,288 11.9 % $ 1,601,314 6.0 % $ 2,135,085 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,813,752 10.5 % $ 1,206,867 4.5 % NA NA Pinnacle Bank $ 3,165,165 11.9 % $ 1,200,986 4.5 % $ 1,734,757 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 3,031,001 9.2 % $ 1,323,509 4.0 % NA NA Pinnacle Bank $ 3,165,288 9.6 % $ 1,318,869 4.0 % $ 1,648,587 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. During the second quarter of 2020, Pinnacle Financial issued 9.0 million depositary shares, each representing a 1/40th interest in a share of Series B preferred stock in a registered public offering to both retail and institutional investors. Net proceeds from the transaction were approximately $217.1 million after deducting the underwriting discounts and offering expenses payable by Pinnacle Financial. The net proceeds were initially retained by Pinnacle Financial and the remaining net proceeds are available to support the capital needs of Pinnacle Financial and Pinnacle Bank, to support Pinnacle Financial's obligations, including interest payments on its outstanding indebtedness and dividend payments on the Series B preferred stock, and for other general corporate purposes.

Other borrowings

Other borrowings	6 Months Ended
	Jun. 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 Pinnacle Financial and Pinnacle Bank have entered into certain other subordinated debt agreements. These instruments are outlined below as of June 30, 2021 (in thousands): Name Date Maturity Total Debt Outstanding Interest Rate at June 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 1.55 % 30-day LIBOR + 1.40% Pinnacle Statutory Trust III September 7, 2006 September 30, 2036 20,619 1.80 % 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 3.49 % 30-day LIBOR + 3.25% BNC Capital Trust II March 11, 2004 April 7, 2034 6,186 3.03 % 30-day LIBOR + 2.85% BNC Capital Trust III September 23, 2004 September 23, 2034 5,155 2.58 % 30-day LIBOR + 2.40% BNC Capital Trust IV September 27, 2006 December 31, 2036 7,217 1.85 % 30-day LIBOR + 1.70% Valley Financial Trust I June 26, 2003 June 26, 2033 4,124 3.25 % 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 1.92 % 30-day LIBOR + 1.73% Southcoast Capital Trust III August 5, 2005 September 30, 2035 10,310 1.65 % 30-day LIBOR + 1.50% Subordinated Debt Pinnacle Bank Subordinated Notes July 30, 2015 July 30, 2025 60,000 3.33 % 3-month LIBOR + 3.128% Pinnacle Bank Subordinated Notes March 10, 2016 July 30, 2025 70,000 3.33 % 3-month LIBOR + 3.128% 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 (11,001) Total subordinated debt and other borrowings $ 671,994 (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 the $130.0 million aggregate principal amount of subordinated notes due July 30, 2025 listed in the table above. 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 $1.4 billion at June 30, 2021. There are no amounts outstanding under this facility at June 30, 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 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. It is reasonably possible Pinnacle Financial's estimate of the allowance for credit losses and determination of impairment of goodwill or intangible assets could change as a result of the continued impact of the COVID-19 pandemic on the economy. The resulting change in these estimates could be material to Pinnacle Financial's consolidated financial statements. 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 six months ended June 30, 2021 and 2020 (in thousands, except per share data): Three months ended Six months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Basic net income per common share $ 1.70 $ 0.83 $ 3.31 $ 1.20 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Dilutive common shares contingently issuable 329 112 308 139 Weighted average diluted common shares outstanding 75,810 75,323 75,736 75,646 Diluted net income per common share $ 1.69 $ 0.83 $ 3.30 $ 1.20
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 No. 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.
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 June 30, 2021 through the date of the issued financial statements. On July 30, 2021, Pinnacle Bank redeemed the $130.0 million aggregate principal amount of subordinated notes as more fully disclosed in Note 11. Other Borrowings . Other than the above-noted redemption, no other subsequent events were noted.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Supplemental Cash Flow Information	Cash Flow Information — Supplemental cash flow information addressing certain cash and noncash transactions for the six months ended June 30, 2021 and 2020 was as follows (in thousands): For the six months ended 2021 2020 Cash Transactions: Interest paid $ 63,683 $ 127,807 Income taxes paid, net 56,073 23,749 Operating lease payments 7,133 6,750 Noncash Transactions: Loans charged-off to the allowance for credit losses 27,029 20,695 Loans foreclosed upon and transferred to other real estate owned 620 2,442 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 4,771 2,928
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 six months ended June 30, 2021 and 2020 (in thousands, except per share data): Three months ended Six months ended 2021 2020 2021 2020 Basic net income per common share calculation: Numerator - Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Basic net income per common share $ 1.70 $ 0.83 $ 3.31 $ 1.20 Diluted net income per common share calculation: Numerator – Net income available to common shareholders $ 127,992 $ 62,444 $ 249,622 $ 90,800 Denominator - Weighted average common shares outstanding 75,481 75,211 75,427 75,507 Dilutive common shares contingently issuable 329 112 308 139 Weighted average diluted common shares outstanding 75,810 75,323 75,736 75,646 Diluted net income per common share $ 1.69 $ 0.83 $ 3.30 $ 1.20

Equity method investment (Table

Equity method investment (Tables)	6 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	A summary of BHG's financial position as of June 30, 2021 and December 31, 2020 and results of operations as of and for the three and six months ended June 30, 2021 and 2020, were as follows (in thousands): As of June 30, 2021 December 31, 2020 Assets $ 1,882,147 $ 1,330,317 Liabilities 1,573,156 1,088,135 Equity interests 308,991 242,182 Total liabilities and equity $ 1,882,147 $ 1,330,317 For the three months ended For the six months ended 2021 2020 2021 2020 Revenues $ 178,984 $ 92,790 $ 336,607 $ 190,734 Net income $ 62,353 $ 37,674 $ 120,915 $ 70,145

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities	The amortized cost and fair value of securities available-for-sale and held-to-maturity at June 30, 2021 and December 31, 2020 are summarized as follows (in thousands): Amortized Gross Gross Fair June 30, 2021: Securities available-for-sale: U.S. Treasury securities $ 111,475 $ 5 $ 11 $ 111,469 U.S. government agency securities 421,833 3,214 2,191 422,856 Mortgage-backed securities 1,854,519 50,747 6,018 1,899,248 State and municipal securities 1,535,461 48,999 3,747 1,580,713 Asset-backed securities 200,200 318 430 200,088 Corporate notes and other 114,878 3,422 1,604 116,696 $ 4,238,366 $ 106,705 $ 14,001 $ 4,331,070 Securities held-to-maturity: State and municipal securities $ 996,036 $ 35,035 $ 432 $ 1,030,639 $ 996,036 $ 35,035 $ 432 $ 1,030,639 Allowance for credit losses - securities held-to-maturity (198) Securities held-to-maturity, net of allowance for credit losses $ 995,838 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 June 30, 2021 by contractual maturity are 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 June 30, 2021: Amortized Fair Amortized Fair Due in one year or less $ 112,691 $ 112,686 $ — $ — Due in one year to five years 33,685 33,706 1,409 1,470 Due in five years to ten years 496,477 508,583 6,609 6,704 Due after ten years 1,540,794 1,576,759 988,018 1,022,465 Mortgage-backed securities 1,854,519 1,899,248 — — Asset-backed securities 200,200 200,088 — — $ 4,238,366 $ 4,331,070 $ 996,036 $ 1,030,639
Classification of Investments According to Term of Unrealized Losses of Less than Twelve Months or Twelve Months or Longer	At June 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 June 30, 2021 U.S. Treasury securities $ 59,973 $ 11 $ — $ — $ 59,973 $ 11 U.S. government agency securities 111,928 2,172 5,497 19 117,425 2,191 Mortgage-backed securities 361,860 5,059 54,747 959 416,607 6,018 State and municipal securities 117,715 1,035 167,184 2,712 284,899 3,747 Asset-backed securities 85,178 285 6,859 145 92,037 430 Corporate notes 4,990 10 24,813 1,594 29,803 1,604 Total temporarily-impaired securities $ 741,644 $ 8,572 $ 259,100 $ 5,429 $ 1,000,744 $ 14,001 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)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans at June 30, 2021 and December 31, 2020 were as follows: June 30, 2021 December 31, 2020 Commercial real estate: Owner occupied $ 2,817,689 $ 2,802,227 Non-owner occupied 5,368,804 5,203,384 Consumer real estate – mortgage 3,335,537 3,099,172 Construction and land development 2,791,611 2,901,746 Commercial and industrial 8,144,170 8,038,457 Consumer and other 440,124 379,515 Subtotal $ 22,897,935 $ 22,424,501 Allowance for credit losses (273,747) (285,050) Loans, net $ 22,624,188 $ 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 June 30, 2021 (in thousands): June 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Commercial real estate - Owner occupied Pass $ 372,905 $ 795,798 $ 431,840 $ 361,214 $ 247,024 $ 406,461 $ 72,504 $ 2,687,746 Special Mention 3,691 19,290 23,524 15,127 9,778 6,844 1,350 79,604 Substandard (1) 1,564 14,187 7,322 3,217 10,268 6,874 4,404 47,836 Substandard-nonaccrual — 171 139 777 1,036 380 — 2,503 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - owner occupied $ 378,160 $ 829,446 $ 462,825 $ 380,335 $ 268,106 $ 420,559 $ 78,258 $ 2,817,689 Commercial real estate - Non-owner occupied Pass $ 840,396 $ 1,036,343 $ 965,640 $ 526,914 $ 443,070 $ 606,855 $ 69,031 $ 4,488,249 Special Mention 58,047 436,107 111,495 47,077 100,497 98,996 35 852,254 Substandard (1) 5,212 8,460 1,603 3,044 1,693 5,578 — 25,590 Substandard-nonaccrual — 3 280 559 — 1,869 — 2,711 Doubtful-nonaccrual — — — — — — — — Total Commercial real estate - Non-owner occupied $ 903,655 $ 1,480,913 $ 1,079,018 $ 577,594 $ 545,260 $ 713,298 $ 69,066 $ 5,368,804 Consumer real estate – mortgage Pass $ 575,556 $ 671,443 $ 383,987 $ 251,640 $ 133,519 $ 344,836 $ 950,101 $ 3,311,082 Special Mention 120 — 58 705 517 967 — 2,367 Substandard (1) — 1,000 — — — 1,854 1,760 4,614 Substandard-nonaccrual 306 179 2,425 678 1,166 10,357 2,363 17,474 Doubtful-nonaccrual — — — — — — — — Total Consumer real estate – mortgage $ 575,982 $ 672,622 $ 386,470 $ 253,023 $ 135,202 $ 358,014 $ 954,224 $ 3,335,537 Construction and land development Pass $ 616,758 $ 1,061,748 $ 801,545 $ 221,560 $ 28,096 $ 17,426 $ 12,308 $ 2,759,441 Special Mention 2,754 16,057 10,125 — — 1,788 1 30,725 Substandard (1) — 349 13 23 — 113 — 498 Substandard-nonaccrual — 288 517 64 70 8 — 947 Doubtful-nonaccrual — — — — — — — — Total Construction and land development $ 619,512 $ 1,078,442 $ 812,200 $ 221,647 $ 28,166 $ 19,335 $ 12,309 $ 2,791,611 Commercial and industrial Pass $ 2,294,532 $ 1,658,111 $ 803,144 $ 404,779 $ 184,911 $ 154,233 $ 2,389,598 $ 7,889,308 Special Mention 6,053 28,372 61,369 3,399 796 2,348 32,350 134,687 Substandard (1) 22,445 11,546 7,209 11,408 3,475 2,013 32,636 90,732 Substandard-nonaccrual 625 16,822 4,335 485 465 648 6,063 29,443 Doubtful-nonaccrual — — — — — — — — Total Commercial and industrial $ 2,323,655 $ 1,714,851 $ 876,057 $ 420,071 $ 189,647 $ 159,242 $ 2,460,647 $ 8,144,170 Consumer and other Pass $ 131,826 $ 105,264 $ 9,940 $ 3,614 $ 4,120 $ 3,211 $ 182,122 $ 440,097 Special Mention — — — — — — — — Substandard (1) — — — — — — — — Substandard-nonaccrual — — — — 22 2 3 27 Doubtful-nonaccrual — — — — — — — — Total Consumer and other $ 131,826 $ 105,264 $ 9,940 $ 3,614 $ 4,142 $ 3,213 $ 182,125 $ 440,124 Total loans Pass $ 4,831,973 $ 5,328,707 $ 3,396,096 $ 1,769,721 $ 1,040,740 $ 1,533,022 $ 3,675,664 $ 21,575,923 Special Mention 70,665 499,826 206,571 66,308 111,588 110,943 33,736 1,099,637 Substandard (1) 29,221 35,542 16,147 17,692 15,436 16,432 38,800 169,270 Substandard-nonaccrual 931 17,463 7,696 2,563 2,759 13,264 8,429 53,105 June 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Total Doubtful-nonaccrual — — — — — — — — Total loans $ 4,932,790 $ 5,881,538 $ 3,626,510 $ 1,856,284 $ 1,170,523 $ 1,673,661 $ 3,756,629 $ 22,897,935
Past Due Balances by Loan Classification	The table below presents the aging of past due balances by loan segment at June 30, 2021 and December 31, 2020 (in thousands): June 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 $ 1,301 $ 902 $ 997 $ 3,200 $ 2,814,489 $ 2,817,689 Non-owner occupied 1,753 278 1,966 3,997 5,364,807 5,368,804 Consumer real estate – mortgage 1,997 6,128 3,370 11,495 3,324,042 3,335,537 Construction and land development — — 135 135 2,791,476 2,791,611 Commercial and industrial 3,002 1,634 5,511 10,147 8,134,023 8,144,170 Consumer and other 752 451 286 1,489 438,635 440,124 Total $ 8,805 $ 9,393 $ 12,265 $ 30,463 $ 22,867,472 $ 22,897,935 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 six months ended June 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 June 30, 2021: Balance at March 31, 2021 $ 22,065 $ 80,519 $ 30,199 $ 37,642 $ 101,076 $ 9,380 $ — $ 280,881 Charged-off loans (6) (332) (161) — (10,972) (1,284) — (12,755) Recovery of previously charged-off loans 476 147 548 200 645 771 — 2,787 Provision for credit losses on loans (3,224) (1,253) (141) (4,355) 11,352 455 — 2,834 Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Three months ended June 30, 2020: Balance at March 31, 2020 $ 23,634 $ 32,114 $ 32,998 $ 38,911 $ 88,060 $ 6,748 $ — $ 222,465 Charged-off loans — (2) (1,196) — (6,734) (1,070) — (9,002) Recovery of previously charged-off loans 80 106 484 50 2,249 648 — 3,617 Provision for credit losses on loans 15,089 36,208 (2,928) 2,936 17,035 (48) — 68,292 Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372 Commercial real estate - Owner occupied Commercial real estate - Non-owner occupied Consumer Construction and land development Commercial and industrial Consumer Unallocated Total Six months ended June 30, 2021: Balance at December 31, 2020 $ 23,298 $ 79,132 $ 33,304 $ 42,408 $ 98,423 $ 8,485 $ — $ 285,050 Charged-off loans (703) (472) (532) (367) (22,721) (2,234) — (27,029) Recovery of previously charged-off loans 1,078 159 913 237 1,851 1,426 — 5,664 Provision for credit losses on loans (4,362) 262 (3,240) (8,791) 24,548 1,645 — 10,062 Balance at June 30, 2021 $ 19,311 $ 79,081 $ 30,445 $ 33,487 $ 102,101 $ 9,322 $ — $ 273,747 Six months ended June 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 (1,061) (263) (2,126) — (14,998) (2,247) — (20,695) Recovery of previously charged-off loans 225 199 674 93 2,997 967 — 5,155 Provision for credit losses on loans 25,969 53,267 1,727 32,286 53,459 1,325 — 168,033 Balance at June 30, 2020 $ 38,803 $ 68,426 $ 29,358 $ 41,897 $ 100,610 $ 6,278 $ — $ 285,372
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 June 30, 2021 and December 31, 2020 (in thousands): Real Estate Business Assets Other Total June 30, 2021 Commercial real estate: Owner occupied $ 5,547 $ — $ — $ 5,547 Non-owner occupied 6,820 — — 6,820 Consumer real estate – mortgage 22,341 — — 22,341 Construction and land development 1,944 — — 1,944 Commercial and industrial — 11,634 289 11,923 Consumer and other — — 24 24 Total $ 36,652 $ 11,634 $ 313 $ 48,599 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 June 30, 2021 and December 31, 2020. Also presented is the balance of loans on nonaccrual status at June 30, 2021 for which there was no related allowance for credit losses recorded (in thousands): June 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 $ 2,503 $ — $ — $ 10,231 $ 5,985 $ — Non-owner occupied 2,711 — — 5,219 1,522 — Consumer real estate – mortgage 17,474 — — 22,191 — 273 Construction and land development 947 — 135 1,953 — — Commercial and industrial 29,443 23,750 1,390 34,238 29,030 1,785 Consumer and other 27 — 285 4 — 304 Total $ 53,105 $ 23,750 $ 1,810 $ 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 six months ended June 30, 2020 (in thousands): June 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 June 30, 2021 with the comparative exposures for December 31, 2020 (in thousands): June 30, 2021 Outstanding Principal Balances Unfunded Commitments Total exposure Total Exposure at December 31, 2020 Lessors of nonresidential buildings $ 3,587,877 $ 1,228,232 $ 4,816,109 $ 4,442,712 Lessors of residential buildings 1,376,546 887,899 2,264,445 2,126,246 Hotels (except Casino Hotels) and Motels 979,770 65,699 1,045,469 1,039,259 New Housing For-Sale Builders 493,082 814,372 1,307,454 1,124,302

Stock Options and Restricted _2

Stock Options and Restricted Shares (Tables)	6 Months Ended
	Jun. 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 six months ended June 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 (17,777) Forfeited (497) Outstanding at June 30, 2021 83,495 $ 23.63 1.44 $ 5,399 (2) Options exercisable at June 30, 2021 83,495 $ 23.63 1.44 $ 5,399 (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 $88.29 per common share at June 30, 2021 for the 83,495 options that were in-the-money at June 30, 2021.
Summary of Activity for Unvested Restricted Share Awards	A summary of activity for unvested restricted share awards for the six months ended June 30, 2021 is as follows: Number Grant Date Unvested at December 31, 2020 594,669 $ 56.97 Shares awarded 200,346 Restrictions lapsed and shares released to associates/directors (157,734) Shares forfeited (24,757) Unvested at June 30, 2021 612,524 $ 62.06 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 six months ended June 30, 2021. The table reflects the life-to-date activity for these awards: Grant Group (1) Vesting Period in years 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 - 5 188,516 89 60 8,280 180,087 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 June 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 six months ended June 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 June 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 June 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)	6 Months Ended
	Jun. 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 June 30, 2021 and December 31, 2020 is included in the following table (in thousands): June 30, 2021 December 31, 2020 Notional Estimated Notional Estimated Interest rate swap agreements: Assets $ 1,577,735 $ 66,074 $ 1,565,916 $ 101,602 Liabilities 1,577,735 (66,890) 1,565,916 (102,919) Total $ 3,155,470 $ (816) $ 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 six months ended June 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 June 30, Six Months Ended June 30, 2021 2020 2021 2020 Interest rate swap agreements Other noninterest income $ 51 $ (794) $ 501 $ (1,137)
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 June 30, 2021 and December 31, 2020 is as follows (in thousands): June 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 six months ended June 30, 2021 and 2020 were as follows, net of tax (in thousands): Amount of Gain (Loss) Recognized Three Months Ended June 30, Six Months Ended June 30, Asset derivatives 2021 2020 2021 2020 Interest rate floor - loans $ 240 $ 6,318 $ (15,034) $ 71,667 Liability derivatives Interest rate swaps - borrowings $ — $ 141 $ — $ (1,439) $ 240 $ 6,459 $ (15,034) $ 70,228 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 $2.7 million and $2.2 million, net of tax, were reclassified from accumulated other comprehensive income (loss) into net income during the three and six months ended June 30, 2021, respectively, compared to gains totaling $123,000 and losses totaling $1.7 million, net of tax, during the three and six months ended June 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 $12.5 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 June 30, 2021 and December 31, 2020 is as follows (in thousands): June 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 5.92 0.53% Federal Funds $ 457,284 $ 11,818 $ 231,421 $ 4,696 Liability derivatives Interest rate swaps - securities Other liabilities 5.40 2.68% 3 month LIBOR/Federal Funds $ 574,206 $ (52,458) $ 477,510 $ (72,010) $ 1,031,490 $ (40,640) $ 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 six months ended June 30, 2021 and 2020 were as follows (in thousands): Location of Gain (Loss) Amount of Gain (Loss) Recognized in Income Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Interest rate swaps - securities Interest income on securities $ (8,092) $ (2,559) $ 26,674 $ (41,432) Securities available-for-sale Interest income on securities $ 8,092 $ 2,559 $ (26,674) $ 41,432 The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at June 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 June 30, 2021 December 31, 2020 June 30, 2021 December 31, 2020 Line item on the balance sheet Securities available-for-sale $ 1,206,722 $ 841,543 $ 40,640 $ 67,314 During the three and six months ended June 30, 2021, amortization expense totaling $927,000 and $1.9 million, respectively, related to previously terminated fair value hedges was recognized as a reduction to interest income on loans compared to $1.0 million and $2.1 million during the three and six months ended June 30, 2020, respectively.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 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 June 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 June 30, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 111,469 $ — $ 111,469 $ — U.S. government agency securities 422,856 — 422,856 — Mortgage-backed securities 1,899,248 — 1,899,248 — State and municipal securities 1,580,713 — 1,579,873 840 Agency-backed securities 200,088 — 200,088 — Corporate notes and other 116,696 — 116,696 — Total investment securities available-for-sale 4,331,070 — 4,330,230 840 Other investments 104,039 — 25,284 78,755 Other assets 82,527 — 82,527 — Total assets at fair value $ 4,517,636 $ — $ 4,438,041 $ 79,595 Other liabilities $ 119,043 $ — $ 119,043 $ — Total liabilities at fair value $ 119,043 $ — $ 119,043 $ — 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 June 30, 2021 and December 31, 2020 (in thousands): June 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 $ 9,602 $ — $ — $ 9,602 Collateral dependent loans (1) 39,739 — — 39,739 Total $ 49,341 $ — $ — $ 49,341 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 June 30, 2021 and December 31, 2020 are net of valuation allowances of $2.2 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 six months ended June 30, 2021 and June 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 June 30, For the Six months ended June 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 $ 13,513 $ 62,129 $ 14,767 $ 39,756 $ 15,497 $ 47,759 $ 15,903 $ 38,156 Total realized gains (losses) included in income 1,256 6,957 27 (278) 1,298 10,397 55 (452) Changes in unrealized gains/losses included in other comprehensive income (1,293) — 501 — (3,168) — 480 — Purchases — 13,124 — 1,366 — 25,556 — 3,727 Issuances — — — — — — — — Settlements (12,636) (3,455) — (232) (12,787) (4,957) (1,143) (819) Transfers out of Level 3 — — — — — — — — Fair value, end of period $ 840 $ 78,755 $ 15,295 $ 40,612 $ 840 $ 78,755 $ 15,295 $ 40,612 Total realized gains (losses) included in income $ 1,256 $ 6,957 $ 27 $ (278) $ 1,298 $ 10,397 $ 55 $ (452)
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 June 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 June 30, 2021 Financial assets: Securities purchased with agreement to resell $ 500,000 $ 486,397 $ — $ — $ 486,397 Securities held-to-maturity 995,838 1,030,639 — 1,030,639 — Loans, net 22,624,188 22,629,233 — — 22,629,233 Consumer loans held-for-sale 56,968 57,810 — 57,810 — Commercial loans held-for-sale 25,843 26,225 — 26,225 — Financial liabilities: Deposits and securities sold under agreements to repurchase 28,395,264 27,472,418 — — 27,472,418 Federal Home Loan Bank advances 888,304 943,600 — — 943,600 Subordinated debt and other borrowings 671,994 662,942 — — 662,942 Off-balance sheet instruments: Commitments to extend credit (2) 10,648,545 25,031 — — 25,031 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 June 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $23.2 million, 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 June 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
	Jun. 30, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Summary of Regulatory Capital Requirement	Management believes, as of June 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 June 30, 2021 Total capital to risk weighted assets: Pinnacle Financial $ 3,897,968 14.5 % $ 2,145,542 8.0 % $ 2,681,928 10.0 % Pinnacle Bank $ 3,483,255 13.1 % $ 2,135,085 8.0 % $ 2,668,857 10.0 % Tier 1 capital to risk weighted assets: Pinnacle Financial $ 3,031,001 11.3 % $ 1,609,157 6.0 % $ 2,145,542 8.0 % Pinnacle Bank $ 3,165,288 11.9 % $ 1,601,314 6.0 % $ 2,135,085 8.0 % Common equity Tier 1 capital to risk weighted assets Pinnacle Financial $ 2,813,752 10.5 % $ 1,206,867 4.5 % NA NA Pinnacle Bank $ 3,165,165 11.9 % $ 1,200,986 4.5 % $ 1,734,757 6.5 % Tier 1 capital to average assets (*): Pinnacle Financial $ 3,031,001 9.2 % $ 1,323,509 4.0 % NA NA Pinnacle Bank $ 3,165,288 9.6 % $ 1,318,869 4.0 % $ 1,648,587 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)	6 Months Ended
	Jun. 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 Pinnacle Financial and Pinnacle Bank have entered into certain other subordinated debt agreements. These instruments are outlined below as of June 30, 2021 (in thousands): Name Date Maturity Total Debt Outstanding Interest Rate at June 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 1.55 % 30-day LIBOR + 1.40% Pinnacle Statutory Trust III September 7, 2006 September 30, 2036 20,619 1.80 % 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 3.49 % 30-day LIBOR + 3.25% BNC Capital Trust II March 11, 2004 April 7, 2034 6,186 3.03 % 30-day LIBOR + 2.85% BNC Capital Trust III September 23, 2004 September 23, 2034 5,155 2.58 % 30-day LIBOR + 2.40% BNC Capital Trust IV September 27, 2006 December 31, 2036 7,217 1.85 % 30-day LIBOR + 1.70% Valley Financial Trust I June 26, 2003 June 26, 2033 4,124 3.25 % 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 1.92 % 30-day LIBOR + 1.73% Southcoast Capital Trust III August 5, 2005 September 30, 2035 10,310 1.65 % 30-day LIBOR + 1.50% Subordinated Debt Pinnacle Bank Subordinated Notes July 30, 2015 July 30, 2025 60,000 3.33 % 3-month LIBOR + 3.128% Pinnacle Bank Subordinated Notes March 10, 2016 July 30, 2025 70,000 3.33 % 3-month LIBOR + 3.128% 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 (11,001) Total subordinated debt and other borrowings $ 671,994 (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) $ in Millions	Jul. 30, 2021USD ($)	Jun. 30, 2021market
Accounting Policies [Abstract]
Number of markets entity operates | market		14
Subsequent Event
Schedule of Equity Method Investments [Line Items]
Repayments of Subordinated Debt | $	$ 130
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				6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2018	Jun. 30, 2021	Jun. 30, 2020
Cash Transactions:
Interest paid					$ 63,683	$ 127,807
Income taxes paid, net					56,073	23,749
Operating lease payments					7,133	6,750
Noncash Transactions:
Loans charged-off to the allowance for credit losses	$ 12,755	$ 9,002			27,029	20,695
Loans foreclosed upon and transferred to other real estate owned					620	2,442
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					$ 4,771	$ 2,928

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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Basic net income per common share calculation:
Net income available to common shareholders	$ 127,992	$ 62,444	$ 249,622	$ 90,800
Denominator - Weighted average common shares outstanding (in shares)	75,481,198	75,210,869	75,427,340	75,507,136
Basic net income per common share (in dollars per share)	$ 1.70	$ 0.83	$ 3.31	$ 1.20
Diluted net income per common share calculation:
Numerator – Net income available to common shareholders	$ 127,992	$ 62,444	$ 249,622	$ 90,800
Denominator - Weighted average common shares outstanding (in shares)	75,481,000	75,211,000	75,427,000	75,507,000
Dilutive shares contingently issuable (in shares)	329,000	112,000	308,000	139,000
Weighted average diluted common shares outstanding (in shares)	75,809,974	75,323,259	75,735,763	75,645,768
Diluted net income per common share (in dollars per share)	$ 1.69	$ 0.83	$ 3.30	$ 1.20

Equity method investment - Fina

Equity method investment - Financial Position and Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Assets	$ 35,412,309		$ 35,412,309		$ 34,932,860
Liabilities	30,311,078		30,311,078		30,028,249
Total liabilities and shareholders' equity	35,412,309		35,412,309		34,932,860
Bankers Healthcare Group, LLC
Schedule of Equity Method Investments [Line Items]
Assets	1,882,147		1,882,147		1,330,317
Liabilities	1,573,156		1,573,156		1,088,135
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	308,991		308,991		242,182
Total liabilities and shareholders' equity	1,882,147		1,882,147		$ 1,330,317
Revenues	178,984	$ 92,790	336,607	$ 190,734
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 62,353	$ 37,674	$ 120,915	$ 70,145

Equity method investment - Narr

Equity method investment - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Technology, trade name and customer relationship intangibles	$ 37,963,000		$ 37,963,000		$ 42,336,000
Amortization of Intangible Assets	2,167,000	$ 2,479,000	4,373,000	$ 4,999,000
Dividends received from equity method investment			49,409,000	7,957,000
Bankers Healthcare Group, LLC
Schedule of Equity Method Investments [Line Items]
Technology, trade name and customer relationship intangibles	7,200,000		7,200,000		$ 7,600,000
Amortization of Intangible Assets	188,000	293,000	376,000	587,000
Accretion income	395,000	541,000	846,000	1,100,000
Dividends received from equity method investment	39,400,000	0	49,400,000	8,000,000
Payments to Acquire Loans Held-for-investment	$ 50,300,000	$ 0	$ 124,900,000	$ 0

Securities Securities - Narrati

Securities Securities - Narrative (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2018	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities transferred to held-to-maturity portfolio			$ 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)
Securities pledged as collateral to secure public funds and other deposits or securities sold under agreements to repurchase	$ 676,500,000				676,500,000
Secured borrowing under agreement to repurchase	177,700,000				177,700,000
Accumulated unrealized losses	14,001,000				14,001,000		$ 17,837,000
Fair value of securities	1,000,744,000				1,000,744,000		871,433,000
Allowance for credit losses - securities held-to-maturity	(198,000)				(198,000)		$ (191,000)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	270,000	$ (95,000)			270,000	247,000
Proceeds from Sale of Available-for-sale Securities					2,240,000	$ 100,055,000
Securities pledged as collateral
Debt Securities, Available-for-sale [Line Items]
Secured borrowing under agreement to repurchase	$ 177,700,000				$ 177,700,000

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Securities available-for-sale [Abstract]
Amortized Cost	$ 4,238,366,000	$ 3,487,296,000
Gross Unrealized Gains	106,705,000	117,222,000
Gross Unrealized Losses	14,001,000	17,837,000
Securities available-for-sale, at fair value	4,331,070,000	3,586,681,000
Available-for-sale, Amortized Cost [Abstract]
Due in one year or less	112,691,000
Due in one year to five years	33,685,000
Due in five years to ten years	496,477,000
Due after ten years	1,540,794,000
Mortgage-backed securities	1,854,519,000
Asset-backed securities	200,200,000
Amortized Cost	4,238,366,000
Available-for-sale, Fair Value [Abstract]
Due in one year or less	112,686,000
Due in one year to five years	33,706,000
Due in five years to ten years	508,583,000
Due after ten years	1,576,759,000
Mortgage-backed securities	1,899,248,000
Asset-backed securities	200,088,000
Securities available-for-sale, at fair value	4,331,070,000	3,586,681,000
Securities held-to-maturity [Abstract]
Amortized Cost	996,036,000	1,028,550,000
Allowance for credit losses - securities held-to-maturity	(198,000)	(191,000)
HeldToMaturitySecurities, net of allowance for credit losses	995,838,000	1,028,359,000
Gross Unrealized Gains	35,035,000	38,272,000
Gross Unrealized Losses	432,000	291,000
Securities held-to-maturity, fair value	1,030,639,000	1,066,531,000
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	6,609,000
Due after ten years	988,018,000
Mortgage-backed securities	0
Asset-backed securities	0
Amortized Cost	996,036,000	1,028,550,000
Held-to-maturity, Fair Value [Abstract]
Due in one year or less	0
Due in one year to five years	1,470,000
Due in five years to ten years	6,704,000
Due after ten years	1,022,465,000
Mortgage-backed securities	0
Asset-backed securities	0
Fair Value	1,030,639,000	1,066,531,000
U.S. Treasury securities
Securities available-for-sale [Abstract]
Amortized Cost	111,475,000	82,199,000
Gross Unrealized Gains	5,000	10,000
Gross Unrealized Losses	11,000	0
Securities available-for-sale, at fair value	111,469,000	82,209,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	111,469,000	82,209,000
U.S. government agency securities
Securities available-for-sale [Abstract]
Amortized Cost	421,833,000	74,916,000
Gross Unrealized Gains	3,214,000	1,547,000
Gross Unrealized Losses	2,191,000	60,000
Securities available-for-sale, at fair value	422,856,000	76,403,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	422,856,000	76,403,000
Mortgage-backed securities
Securities available-for-sale [Abstract]
Amortized Cost	1,854,519,000	1,623,759,000
Gross Unrealized Gains	50,747,000	67,759,000
Gross Unrealized Losses	6,018,000	2,327,000
Securities available-for-sale, at fair value	1,899,248,000	1,689,191,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	1,899,248,000	1,689,191,000
State and municipal securities
Securities available-for-sale [Abstract]
Amortized Cost	1,535,461,000	1,411,288,000
Gross Unrealized Gains	48,999,000	44,559,000
Gross Unrealized Losses	3,747,000	12,484,000
Securities available-for-sale, at fair value	1,580,713,000	1,443,363,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	1,580,713,000	1,443,363,000
Securities held-to-maturity [Abstract]
Amortized Cost	996,036,000	1,028,550,000
Gross Unrealized Gains	35,035,000	38,272,000
Gross Unrealized Losses	432,000	291,000
Securities held-to-maturity, fair value	1,030,639,000	1,066,531,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	996,036,000	1,028,550,000
Held-to-maturity, Fair Value [Abstract]
Fair Value	1,030,639,000	1,066,531,000
Asset-backed securities
Securities available-for-sale [Abstract]
Amortized Cost	200,200,000	177,878,000
Gross Unrealized Gains	318,000	715,000
Gross Unrealized Losses	430,000	657,000
Securities available-for-sale, at fair value	200,088,000	177,936,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	200,088,000	177,936,000
Corporate notes and other
Securities available-for-sale [Abstract]
Amortized Cost	114,878,000	117,256,000
Gross Unrealized Gains	3,422,000	2,632,000
Gross Unrealized Losses	1,604,000	2,309,000
Securities available-for-sale, at fair value	116,696,000	117,579,000
Available-for-sale, Fair Value [Abstract]
Securities available-for-sale, at fair value	$ 116,696,000	$ 117,579,000

Securities- Unrealized Losses (

Securities- Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	$ 741,644	$ 407,150
Investments with an unrealized loss of less than 12 months, unrealized losses	8,572	4,277
Investments with an unrealized loss of 12 months or longer, fair value	259,100	464,283
Investments with an unrealized loss of 12 months or longer, unrealized losses	5,429	13,560
Total investments with an unrealized loss, fair value	1,000,744	871,433
Total investments with an unrealized loss, unrealized losses	14,001	17,837
U.S. Treasury securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	59,973	0
Investments with an unrealized loss of less than 12 months, unrealized losses	11	0
Investments with an unrealized loss of 12 months or longer, fair value	0	0
Investments with an unrealized loss of 12 months or longer, unrealized losses	0	0
Total investments with an unrealized loss, fair value	59,973	0
Total investments with an unrealized loss, unrealized losses	11	0
U.S. government agency securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	111,928	9,962
Investments with an unrealized loss of less than 12 months, unrealized losses	2,172	38
Investments with an unrealized loss of 12 months or longer, fair value	5,497	6,091
Investments with an unrealized loss of 12 months or longer, unrealized losses	19	22
Total investments with an unrealized loss, fair value	117,425	16,053
Total investments with an unrealized loss, unrealized losses	2,191	60
Mortgage-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	361,860	165,696
Investments with an unrealized loss of less than 12 months, unrealized losses	5,059	1,772
Investments with an unrealized loss of 12 months or longer, fair value	54,747	35,997
Investments with an unrealized loss of 12 months or longer, unrealized losses	959	555
Total investments with an unrealized loss, fair value	416,607	201,693
Total investments with an unrealized loss, unrealized losses	6,018	2,327
State and municipal securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	117,715	175,115
Investments with an unrealized loss of less than 12 months, unrealized losses	1,035	2,220
Investments with an unrealized loss of 12 months or longer, fair value	167,184	345,435
Investments with an unrealized loss of 12 months or longer, unrealized losses	2,712	10,264
Total investments with an unrealized loss, fair value	284,899	520,550
Total investments with an unrealized loss, unrealized losses	3,747	12,484
Asset-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	85,178	46,399
Investments with an unrealized loss of less than 12 months, unrealized losses	285	207
Investments with an unrealized loss of 12 months or longer, fair value	6,859	52,840
Investments with an unrealized loss of 12 months or longer, unrealized losses	145	450
Total investments with an unrealized loss, fair value	92,037	99,239
Total investments with an unrealized loss, unrealized losses	430	657
Corporate notes
Available-for-sale securities, continuous unrealized loss position [Abstract]
Investments with an unrealized loss of less than 12 months, fair value	4,990	9,978
Investments with an unrealized loss of less than 12 months, unrealized losses	10	40
Investments with an unrealized loss of 12 months or longer, fair value	24,813	23,920
Investments with an unrealized loss of 12 months or longer, unrealized losses	1,594	2,269
Total investments with an unrealized loss, fair value	29,803	33,898
Total investments with an unrealized loss, unrealized losses	$ 1,604	$ 2,309

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 22,897,935		$ 22,897,935		$ 22,424,501
Percentage of loan portfolio as commercial loan	76.50%		76.50%
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	$ 8,800		$ 8,800		10,700
Amount drawn from loans and other extensions of credit granted	5,400		5,400		6,800
Commercial loans held-for-sale	25,843		25,843		31,200
Mortgage loans held-for-sale	37,300		37,300		67,800
Loans sold			941,300	$ 837,400
Gain (Loss) on Sale of Mortgage Loans	6,700	$ 19,600	20,366	$ 28,202
Paycheck Protection Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,400,000		$ 1,400,000		$ 1,800,000
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of credit exposure to risk based capital	80.10%		80.10%		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	248.80%		248.80%		264.00%

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 22,897,935	$ 22,424,501
Loan losses, allowance	273,747	285,050
Loans and Leases Receivable, Net Amount	22,624,188	22,139,451
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,817,689	2,802,227
Commercial real estate - Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,368,804	5,203,384
Consumer real estate – mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,335,537	3,099,172
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,791,611	2,901,746
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,144,170	8,038,457
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 440,124	$ 379,515

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Loan Classification by Risk Rating Category (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021		$ 4,932,790
2020		5,881,538
2019		3,626,510
2018		1,856,284
2017		1,170,523
Prior		1,673,661
Revolving Loans		3,756,629
Total		22,897,935	$ 22,424,501
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		4,831,973
2020		5,328,707
2019		3,396,096
2018		1,769,721
2017		1,040,740
Prior		1,533,022
Revolving Loans		3,675,664
Total		21,575,923
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		70,665
2020		499,826
2019		206,571
2018		66,308
2017		111,588
Prior		110,943
Revolving Loans		33,736
Total		1,099,637
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	29,221
2020	[1]	35,542
2019	[1]	16,147
2018	[1]	17,692
2017	[1]	15,436
Prior	[1]	16,432
Revolving Loans	[1]	38,800
Total	[1]	169,270
Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		931
2020		17,463
2019		7,696
2018		2,563
2017		2,759
Prior		13,264
Revolving Loans		8,429
Total		53,105
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		378,160
2020		829,446
2019		462,825
2018		380,335
2017		268,106
Prior		420,559
Revolving Loans		78,258
Total		2,817,689	2,802,227
Commercial real estate - Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		372,905
2020		795,798
2019		431,840
2018		361,214
2017		247,024
Prior		406,461
Revolving Loans		72,504
Total		2,687,746
Commercial real estate - Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		3,691
2020		19,290
2019		23,524
2018		15,127
2017		9,778
Prior		6,844
Revolving Loans		1,350
Total		79,604
Commercial real estate - Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	1,564
2020	[1]	14,187
2019	[1]	7,322
2018	[1]	3,217
2017	[1]	10,268
Prior	[1]	6,874
Revolving Loans	[1]	4,404
Total	[1]	47,836
Commercial real estate - Owner occupied | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		171
2019		139
2018		777
2017		1,036
Prior		380
Revolving Loans		0
Total		2,503
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		903,655
2020		1,480,913
2019		1,079,018
2018		577,594
2017		545,260
Prior		713,298
Revolving Loans		69,066
Total		5,368,804	5,203,384
Commercial real estate - Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		840,396
2020		1,036,343
2019		965,640
2018		526,914
2017		443,070
Prior		606,855
Revolving Loans		69,031
Total		4,488,249
Commercial real estate - Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		58,047
2020		436,107
2019		111,495
2018		47,077
2017		100,497
Prior		98,996
Revolving Loans		35
Total		852,254
Commercial real estate - Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	5,212
2020	[1]	8,460
2019	[1]	1,603
2018	[1]	3,044
2017	[1]	1,693
Prior	[1]	5,578
Revolving Loans	[1]	0
Total	[1]	25,590
Commercial real estate - Non-owner occupied | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		3
2019		280
2018		559
2017		0
Prior		1,869
Revolving Loans		0
Total		2,711
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		575,982
2020		672,622
2019		386,470
2018		253,023
2017		135,202
Prior		358,014
Revolving Loans		954,224
Total		3,335,537	3,099,172
Consumer real estate – mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		575,556
2020		671,443
2019		383,987
2018		251,640
2017		133,519
Prior		344,836
Revolving Loans		950,101
Total		3,311,082
Consumer real estate – mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		120
2020		0
2019		58
2018		705
2017		517
Prior		967
Revolving Loans		0
Total		2,367
Consumer real estate – mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	0
2020	[1]	1,000
2019	[1]	0
2018	[1]	0
2017	[1]	0
Prior	[1]	1,854
Revolving Loans	[1]	1,760
Total	[1]	4,614
Consumer real estate – mortgage | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		306
2020		179
2019		2,425
2018		678
2017		1,166
Prior		10,357
Revolving Loans		2,363
Total		17,474
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		619,512
2020		1,078,442
2019		812,200
2018		221,647
2017		28,166
Prior		19,335
Revolving Loans		12,309
Total		2,791,611	2,901,746
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		616,758
2020		1,061,748
2019		801,545
2018		221,560
2017		28,096
Prior		17,426
Revolving Loans		12,308
Total		2,759,441
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		2,754
2020		16,057
2019		10,125
2018		0
2017		0
Prior		1,788
Revolving Loans		1
Total		30,725
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	0
2020	[1]	349
2019	[1]	13
2018	[1]	23
2017	[1]	0
Prior	[1]	113
Revolving Loans	[1]	0
Total	[1]	498
Construction and land development | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		288
2019		517
2018		64
2017		70
Prior		8
Revolving Loans		0
Total		947
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		2,323,655
2020		1,714,851
2019		876,057
2018		420,071
2017		189,647
Prior		159,242
Revolving Loans		2,460,647
Total		8,144,170	8,038,457
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		2,294,532
2020		1,658,111
2019		803,144
2018		404,779
2017		184,911
Prior		154,233
Revolving Loans		2,389,598
Total		7,889,308
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021		6,053
2020		28,372
2019		61,369
2018		3,399
2017		796
Prior		2,348
Revolving Loans		32,350
Total		134,687
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	[1]	22,445
2020	[1]	11,546
2019	[1]	7,209
2018	[1]	11,408
2017	[1]	3,475
Prior	[1]	2,013
Revolving Loans	[1]	32,636
Total	[1]	90,732
Commercial and industrial | Substandard-nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
2021		625
2020		16,822
2019		4,335
2018		485
2017		465
Prior		648
Revolving Loans		6,063
Total		29,443
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		131,826
2020		105,264
2019		9,940
2018		3,614
2017		4,142
Prior		3,213
Revolving Loans		182,125
Total		440,124	$ 379,515
Consumer and other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021		131,826
2020		105,264
2019		9,940
2018		3,614
2017		4,120
Prior		3,211
Revolving Loans		182,122
Total		440,097
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		22
Prior		2
Revolving Loans		3
Total		27
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 $169.3 million at June 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	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 22,897,935	$ 22,424,501
30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	8,805	31,881
60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	9,393	15,721
90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	12,265	17,443
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	30,463	65,045
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	22,867,472	22,359,456
Commercial real estate - Owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,817,689	2,802,227
Commercial real estate - Owner occupied | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,301	934
Commercial real estate - Owner occupied | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	902	2,672
Commercial real estate - Owner occupied | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	997	1,860
Commercial real estate - Owner occupied | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,200	5,466
Commercial real estate - Owner occupied | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,814,489	2,796,761
Commercial real estate - Non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	5,368,804	5,203,384
Commercial real estate - Non-owner occupied | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,753	726
Commercial real estate - Non-owner occupied | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	278	6,220
Commercial real estate - Non-owner occupied | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	1,966	3,861
Commercial real estate - Non-owner occupied | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,997	10,807
Commercial real estate - Non-owner occupied | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,364,807	5,192,577
Consumer real estate – mortgage
Financing Receivable, Past Due [Line Items]
Loans	3,335,537	3,099,172
Consumer real estate – mortgage | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,997	8,859
Consumer real estate – mortgage | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	6,128	328
Consumer real estate – mortgage | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	3,370	6,274
Consumer real estate – mortgage | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	11,495	15,461
Consumer real estate – mortgage | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,324,042	3,083,711
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	2,791,611	2,901,746
Construction and land development | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	278
Construction and land development | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	418
Construction and land development | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	135	736
Construction and land development | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	135	1,432
Construction and land development | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,791,476	2,900,314
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	8,144,170	8,038,457
Commercial and industrial | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	3,002	20,278
Commercial and industrial | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,634	5,801
Commercial and industrial | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	5,511	4,408
Commercial and industrial | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	10,147	30,487
Commercial and industrial | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	8,134,023	8,007,970
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans	440,124	379,515
Consumer and other | 30-59 days past due
Financing Receivable, Past Due [Line Items]
Loans	752	806
Consumer and other | 60-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	451	282
Consumer and other | 90 days or more past due
Financing Receivable, Past Due [Line Items]
Loans	286	304
Consumer and other | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,489	1,392
Consumer and other | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 438,635	$ 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 280,881	$ 222,465	$ 285,050	$ 94,777
Impact of adopting ASC 326				38,102
Charged-off loans	(12,755)	(9,002)	(27,029)	(20,695)
Recovery of previously charged-off loans	2,787	3,617	5,664	5,155
Provision for Loan and Lease Losses	2,834	68,292	10,062	168,033
Ending Balance	273,747	285,372	273,747	285,372
Commercial real estate - Owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	22,065	23,634	23,298	13,406
Impact of adopting ASC 326				264
Charged-off loans	(6)	0	(703)	(1,061)
Recovery of previously charged-off loans	476	80	1,078	225
Provision for Loan and Lease Losses	(3,224)	15,089	(4,362)	25,969
Ending Balance	19,311	38,803	19,311	38,803
Commercial real estate - Non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	80,519	32,114	79,132	19,963
Impact of adopting ASC 326				(4,740)
Charged-off loans	(332)	(2)	(472)	(263)
Recovery of previously charged-off loans	147	106	159	199
Provision for Loan and Lease Losses	(1,253)	36,208	262	53,267
Ending Balance	79,081	68,426	79,081	68,426
Consumer real estate – mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	30,199	32,998	33,304	8,054
Impact of adopting ASC 326				21,029
Charged-off loans	(161)	(1,196)	(532)	(2,126)
Recovery of previously charged-off loans	548	484	913	674
Provision for Loan and Lease Losses	(141)	(2,928)	(3,240)	1,727
Ending Balance	30,445	29,358	30,445	29,358
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	37,642	38,911	42,408	12,662
Impact of adopting ASC 326				(3,144)
Charged-off loans	0	0	(367)	0
Recovery of previously charged-off loans	200	50	237	93
Provision for Loan and Lease Losses	(4,355)	2,936	(8,791)	32,286
Ending Balance	33,487	41,897	33,487	41,897
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	101,076	88,060	98,423	36,112
Impact of adopting ASC 326				23,040
Charged-off loans	(10,972)	(6,734)	(22,721)	(14,998)
Recovery of previously charged-off loans	645	2,249	1,851	2,997
Provision for Loan and Lease Losses	11,352	17,035	24,548	53,459
Ending Balance	102,101	100,610	102,101	100,610
Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9,380	6,748	8,485	3,595
Impact of adopting ASC 326				2,638
Charged-off loans	(1,284)	(1,070)	(2,234)	(2,247)
Recovery of previously charged-off loans	771	648	1,426	967
Provision for Loan and Lease Losses	455	(48)	1,645	1,325
Ending Balance	9,322	6,278	9,322	6,278
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	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 48,599	$ 74,292
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	36,652	51,812
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,634	22,437
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	313	43
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,547	15,681
Commercial real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,547	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	6,820	7,000
Commercial real estate - Non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	6,820	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	22,341	27,082
Consumer real estate – mortgage | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	22,341	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	1,944	2,049
Construction and land development | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	1,944	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	11,923	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	11,634	22,437
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	289	39
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	24	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	$ 24	$ 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	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	$ 53,105	$ 73,836
Financing Receivable, Nonaccrual, No Allowance	23,750	36,537
Financing Receivable, 90 Days or More Past Due, Still Accruing	1,810	2,362
Commercial real estate - Owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	2,503	10,231
Financing Receivable, Nonaccrual, No Allowance	0	5,985
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Commercial real estate - Non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	2,711	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	17,474	22,191
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	273
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	947	1,953
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	135	0
Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	29,443	34,238
Financing Receivable, Nonaccrual, No Allowance	23,750	29,030
Financing Receivable, 90 Days or More Past Due, Still Accruing	1,390	1,785
Consumer and other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	27	4
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 285	$ 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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	776,000	$ 854,000	1,100,000	$ 1,600,000
Currently performing impaired loans	$ 39,500,000		$ 39,500,000		$ 51,700,000

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	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	Jun. 30, 2021	Dec. 31, 2020
Lessors of nonresidential buildings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	$ 3,587,877
Unfunded Commitments	1,228,232
Total exposure	4,816,109	$ 4,442,712
Lessors of residential buildings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	1,376,546
Unfunded Commitments	887,899
Total exposure	2,264,445	2,126,246
Hotels (except Casino Hotels) and Motels
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	979,770
Unfunded Commitments	65,699
Total exposure	1,045,469	1,039,259
New Housing For-Sale Builders
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding Principal Balances	493,082
Unfunded Commitments	814,372
Total exposure	$ 1,307,454	$ 1,124,302

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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)	18.90%	15.20%	18.60%	9.50%
Federal and State income tax statutory rate (as percent)			26.14%	26.14%
Excess tax benefit	$ 302,000	$ (272,000)	$ 1,900,000	$ 590,000
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount				$ 22,400,000

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Off-Balance Sheet, Credit Loss, Liability	$ 23.2	$ 23.2
Commitments
Loss Contingencies [Line Items]
Amount of commitment	10,600
Home Equity Line of Credit
Loss Contingencies [Line Items]
Amount of commitment	$ 1,200
Standby letter of credit
Loss Contingencies [Line Items]
Expiry period of standby letter of credit, maximum	2 years
Amount of commitment	$ 243.8

Stock Options and Restricted _3

Stock Options and Restricted Shares - Narrative (Details) - USD ($) $ in Thousands	Jul. 31, 2015	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 5,669	$ 5,399	$ 4,148	$ 5,501	$ 11,068	$ 9,649
Remaining Share-Based Compensation on Unvested Restricted Stock Awards		$ 59,900				$ 59,900
Weighted Average Remaining Period of Sharebased Compensation Expense						1 year 8 months 19 days
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuances (in shares)		2,000,000				2,000,000
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	6 Months Ended		12 Months Ended
	Jun. 30, 2021USD ($)$ / sharesshares		Dec. 31, 2020USD ($)$ / sharesshares
Number
Outstanding, beginning balance (in shares)	101,769
Granted (in shares)	0
Exercised (in shares)	(17,777)
Forfeited (in shares)	(497)
Outstanding, ending balance (in shares)	83,495		101,769
Additional disclosures
Options exercisable (in shares)	83,495
Weighted-average exercise price of options outstanding (in dollars per share) | $ / shares	$ 23.63		$ 23.46
Weighted-average contractual remaining term for options outstanding	1 year 5 months 8 days		1 year 10 months 9 days
Aggregate intrinsic value | $	$ 5,399	[1]	$ 4,169	[2]
Weighted- average exercise price of options exercisable (in dollars per share) | $ / shares	$ 23.63
Weighted-average contractual remaining term for options exercisable	1 year 5 months 8 days
Aggregate intrinsic value of options exercisable | $	$ 5,399	[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 $88.29 per common share at June 30, 2021 for the 83,495 options that were in-the-money at June 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	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Number
Unvested, beginning of period (in shares)	594,669
Shares awarded (in shares)	200,346
Restrictions lapsed and shares released to associates/directors (in shares)	(157,734)
Shares forfeited (in shares)	(24,757)
Unvested, end of period (in shares)	612,524
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	$ 62.06

Stock Options and Restricted _6

Stock Options and Restricted Shares - Restricted Shares Awarded (Details)	6 Months Ended
	Jun. 30, 2021shares
Time Based Awards | Associates
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded	188,516	[1],[2]
Restrictions lapsed and shares released to participants	89	[1],[2]
Shares Forfeited by participants	8,280	[1],[2],[3]
Shares Unvested	180,087	[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	60	[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 June 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		6 Months Ended
		Jun. 30, 2021	Jun. 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		133,041
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation		46,332
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]	188,516
Restrictions lapsed and shares released to participants	[4],[5]	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	[4],[5]	60
Shares Forfeited by participants	[4],[5],[6]	8,280
Shares Unvested	[4],[5]	180,087
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 June 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 June 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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	3,155,470		3,155,470		$ 3,131,832
Estimated Fair Value	(816)		(816)		(1,317)
Derivative, Gain (Loss) on Derivative, Net	51	$ (794)	501	$ (1,137)
Not Designated as Hedging Instrument | Assets
Derivative [Line Items]
Notional Amount	1,577,735		1,577,735		1,565,916
Estimated Fair Value	66,074		66,074		101,602
Not Designated as Hedging Instrument | Liabilities
Derivative [Line Items]
Notional Amount	1,577,735		1,577,735		1,565,916
Estimated Fair Value	$ (66,890)		$ (66,890)		$ (102,919)

Derivative Instruments - Hedge

Derivative Instruments - Hedge Derivatives (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 34,300,000
Notional Amount	1,500,000,000		$ 1,500,000,000
Net (gain) loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax	(2,692,000)	$ (123,000)	(2,188,000)	$ 1,702,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			12,500,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	3,155,470,000		3,155,470,000		$ 3,131,832,000
Hedging derivative | Cash flow hedge
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	240,000	6,459,000	(15,034,000)	70,228,000
Hedging derivative | Fair value hedge
Derivative [Line Items]
Forecasted Notional Amount	1,031,490,000		1,031,490,000		708,931,000
Fair Value Hedge Assets	(40,640,000)		(40,640,000)		(67,314,000)
Hedging derivative | Fair value hedge | Securities
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	(8,092,000)	(2,559,000)	26,674,000	(41,432,000)
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge	8,092,000	2,559,000	(26,674,000)	41,432,000
Derivative Instruments and Hedges, Assets	1,206,722,000		1,206,722,000		841,543,000
Fair Value Hedging Adjustment	40,640,000		40,640,000		67,314,000
Hedging derivative | Fair value hedge | Securities | LIBOR
Derivative [Line Items]
Forecasted Notional Amount	477,500,000		477,500,000
Hedging derivative | Fair value hedge | Securities | Federal Funds Rate
Derivative [Line Items]
Forecasted Notional Amount	554,000,000		554,000,000
Hedging derivative | Fair value hedge | Loans
Derivative [Line Items]
Amortization expense, reduction to interest income on loans	927,000	1,000,000	1,900,000	2,100,000
Pay fixed and receive variable swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	1,577,735,000		1,577,735,000		1,565,916,000
Pay variable and receive fixed swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	1,577,735,000		$ 1,577,735,000		$ 1,565,916,000
Asset derivatives | Hedging derivative | Cash flow hedge
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)	$ 240,000	6,318,000	$ (15,034,000)	71,667,000
Asset derivatives | Hedging derivative | Fair value hedge | Securities
Derivative [Line Items]
Weighted Average Remaining Maturity			5 years 11 months 1 day
Pay Rate (as percent)	0.53%		0.53%
Derivative, Type of Interest Rate Paid on Swap			Federal Funds
Forecasted Notional Amount	$ 457,284,000		$ 457,284,000		$ 231,421,000
Description of Location of Interest Rate Fair Value Hedge Derivative on Balance Sheet			Other assets		Other assets
Fair Value Hedge Assets	11,818,000		$ 11,818,000		$ 4,696,000
Liability derivatives | Hedging derivative | Cash flow hedge
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 0	$ 141,000	$ 0	$ (1,439,000)
Liability derivatives | Hedging derivative | Fair value hedge | Securities
Derivative [Line Items]
Weighted Average Remaining Maturity			5 years 4 months 24 days
Pay Rate (as percent)	2.68%		2.68%
Derivative, Type of Interest Rate Paid on Swap			3 month LIBOR/Federal Funds
Forecasted Notional Amount	$ 574,206,000		$ 574,206,000		$ 477,510,000
Description of Location of Interest Rate Fair Value Hedge Derivative on Balance Sheet			Other liabilities		Other liabilities
Fair Value Hedge Assets	$ (52,458,000)		$ (52,458,000)		$ (72,010,000)

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Recurring
Assets, Fair Value Disclosure [Abstract]
U.S. Treasury securities		$ 111,469	$ 82,209
U.S. government agency securities		422,856	76,403
Mortgage-backed securities		1,899,248	1,689,191
State and municipal securities		1,580,713	1,443,363
Agency-backed securities		200,088	177,936
Corporate notes and other		116,696	117,579
Total investment securities available-for-sale		4,331,070	3,586,681
Other Investments		104,039	73,395
Other assets		82,527	242,470
Total assets at fair value		4,517,636	3,902,546
Liabilities at fair value: [Abstract]
Other liabilities		119,043	177,025
Total liabilities at fair value		119,043	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		111,469	82,209
U.S. government agency securities		422,856	76,403
Mortgage-backed securities		1,899,248	1,689,191
State and municipal securities		1,579,873	1,427,866
Agency-backed securities		200,088	177,936
Corporate notes and other		116,696	117,579
Total investment securities available-for-sale		4,330,230	3,571,184
Other Investments		25,284	25,636
Other assets		82,527	242,470
Total assets at fair value		4,438,041	3,839,290
Liabilities at fair value: [Abstract]
Other liabilities		119,043	177,025
Total liabilities at fair value		119,043	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		840	15,497
Agency-backed securities		0	0
Corporate notes and other		0	0
Total investment securities available-for-sale		840	15,497
Other Investments		78,755	47,759
Other assets		0	0
Total assets at fair value		79,595	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		49,341	56,155
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		9,602	12,360
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	39,739	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		49,341	56,155
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]
Other real estate owned		9,602	12,360
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	$ 39,739	$ 43,795
[1]	The carrying values of collateral dependent loans at June 30, 2021 and December 31, 2020 are net of valuation allowances of $2.2 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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	$ 62,129	$ 39,756	47,759	$ 38,156
Total realized gains (losses) included in income	6,957	(278)	10,397	(452)
Changes in unrealized gains/losses included in other comprehensive income	0	0	0	0
Purchases	13,124	1,366	25,556	3,727
Issuances	0	0	0	0
Settlements	(3,455)	(232)	(4,957)	(819)
Transfers out of Level 3	0	0	0	0
Fair value, end of period	78,755	40,612	78,755	40,612
Total realized gains (losses) included in income	6,957	(278)	10,397	(452)
Recurring | Available-for-sale Securities
Assets measured on recurring basis, unobservable input reconciliation, calculation [Roll Forward]
Fair value, beginning of period	13,513	14,767	15,497	15,903
Total realized gains (losses) included in income	1,256	27	1,298	55
Changes in unrealized gains/losses included in other comprehensive income	(1,293)	501	(3,168)	480
Purchases	0	0	0	0
Issuances	0	0	0	0
Settlements	(12,636)	0	(12,787)	(1,143)
Transfers out of Level 3	0	0	0	0
Fair value, end of period	840	15,295	840	15,295
Total realized gains (losses) included in income	$ 1,256	$ 27	$ 1,298	$ 55

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Financial assets:
Securities purchased with agreement to resell		$ 500,000	$ 0
Securities held-to-maturity		1,030,639	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		1,030,639	1,066,531
Loans, net		0	0
Consumer loans held-for-sale		57,810	89,625
Commercial loans held-for-sale		26,225	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		486,397
Securities held-to-maturity		0	0
Loans, net		22,629,233	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		27,472,418	26,929,142
Federal Home Loan Bank advances		943,600	1,189,035
Subordinated debt and other borrowings		662,942	677,521
Off-balance sheet instruments:
Commitments to extend credit	[1]	25,031	24,887
Carrying/ Notional Amount
Financial assets:
Securities purchased with agreement to resell		500,000
Securities held-to-maturity		995,838	1,028,359
Loans, net		22,624,188	22,139,451
Consumer loans held-for-sale		56,968	87,821
Commercial loans held-for-sale		25,843	31,200
Financial liabilities:
Deposits and securities sold under agreements to repurchase		28,395,264	27,833,739
Federal Home Loan Bank advances		888,304	1,087,927
Subordinated debt and other borrowings		671,994	670,575
Off-balance sheet instruments:
Commitments to extend credit	[1]	10,648,545	9,692,607
Estimated Fair Value
Financial assets:
Securities purchased with agreement to resell	[2]	486,397
Securities held-to-maturity	[2]	1,030,639	1,066,531
Loans, net	[2]	22,629,233	22,407,546
Consumer loans held-for-sale	[2]	57,810	89,625
Commercial loans held-for-sale	[2]	26,225	31,841
Financial liabilities:
Deposits and securities sold under agreements to repurchase	[2]	27,472,418	26,929,142
Federal Home Loan Bank advances	[2]	943,600	1,189,035
Subordinated debt and other borrowings	[2]	662,942	677,521
Off-balance sheet instruments:
Commitments to extend credit	[1],[2]	$ 25,031	$ 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 June 30, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $23.2 million, 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 June 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		6 Months Ended
		Jun. 30, 2021USD ($)$ / shares	Jun. 30, 2020shares	Jun. 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		$ 1,629,580,000		$ 1,629,580,000	$ 1,407,723,000
Quarterly common stock dividend (in dollar per share) | $ / shares		$ 0.18		$ 0.18	$ 0.16
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares		$ 16.88
Preferred Stock, Dividend Per Depositary Share		$ 0.422
Depositary Shares | shares			9,000
Issuance of preferred stock, net of issuance costs				$ 217,100,000
Pinnacle Financial
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash dividends paid to Pinnacle Financial by Pinnacle Bank				23,300,000
Actual
Total capital to risk weighted assets		3,897,968,000		3,897,968,000	$ 3,678,405,000
Tier I capital to risk weighted assets		3,031,001,000		3,031,001,000	2,803,541,000
Common equity Tier 1 capital to risk weighted assets		2,813,752,000		2,813,752,000	2,586,292,000
Tier I capital to average assets	[1]	$ 3,031,001,000		$ 3,031,001,000	$ 2,803,541,000
Actual
Total capital to risk weighted assets (as percent)		0.145		0.145	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]	0.092		0.092	0.086
Minimum Capital Requirement
Total capital to risk weighted assets		$ 2,145,542,000		$ 2,145,542,000	$ 2,063,352,000
Tier I capital to risk weighted assets		1,609,157,000		1,609,157,000	1,547,514,000
Common equity Tier 1 capital to risk weighted assets		1,206,867,000		1,206,867,000	1,160,635,000
Tier I capital to average assets	[1]	$ 1,323,509,000		$ 1,323,509,000	$ 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		$ 2,681,928,000		$ 2,681,928,000	$ 2,579,190,000
Tier I capital to risk weighted assets		$ 2,145,542,000		$ 2,145,542,000	$ 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		$ 681,900,000		$ 681,900,000
Actual
Total capital to risk weighted assets		3,483,255,000		3,483,255,000	$ 3,259,538,000
Tier I capital to risk weighted assets		3,165,288,000		3,165,288,000	2,933,674,000
Common equity Tier 1 capital to risk weighted assets		3,165,165,000		3,165,165,000	2,933,551,000
Tier I capital to average assets	[1]	$ 3,165,288,000		$ 3,165,288,000	$ 2,933,674,000
Actual
Total capital to risk weighted assets (as percent)		0.131		0.131	0.127
Tier I capital to risk weighted assets (as percent)		0.119		0.119	0.114
Common equity Tier 1 capital to risk weighted assets		0.119		0.119	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		$ 2,135,085,000		$ 2,135,085,000	$ 2,055,892,000
Tier I capital to risk weighted assets		1,601,314,000		1,601,314,000	1,541,919,000
Common equity Tier 1 capital to risk weighted assets		1,200,986,000		1,200,986,000	1,156,439,000
Tier I capital to average assets	[1]	$ 1,318,869,000		$ 1,318,869,000	$ 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		$ 2,668,857,000		$ 2,668,857,000	$ 2,569,865,000
Tier I capital to risk weighted assets		2,135,085,000		2,135,085,000	2,055,892,000
Common equity Tier 1 capital to risk weighted assets		1,734,757,000		1,734,757,000	1,670,412,000
Tier I capital to average assets	[1]	$ 1,648,587,000		$ 1,648,587,000	$ 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 ($)	Jun. 30, 2021USD ($)subsidiary	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Number of wholly owned subsidiaries | subsidiary			12
Term			30 years
Total Debt Outstanding			$ 671,994	$ 670,575
Debt issuance costs and fair value adjustments			(11,001)
Loans			22,897,935	22,424,501
Subsequent Event
Debt Instrument [Line Items]
Repayments of Subordinated Debt		$ 130,000
Paycheck Protection Program [Member]
Debt Instrument [Line Items]
Loans			1,400,000	$ 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)			1.55%
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)			1.80%
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)			3.49%
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)			3.03%
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)			2.58%
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)			1.85%
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)			3.25%
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)			1.92%
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)			1.65%
Coupon Structure			30-day LIBOR + 1.50%
Pinnacle Bank Subordinated Notes (2015)
Debt Instrument [Line Items]
Date Established			Jul. 30, 2015
Maturity			Jul. 30, 2025
Total Debt Outstanding			$ 60,000
Interest Rate (as percent)			3.33%
Coupon Structure			three month LIBOR + 3.128%
Pinnacle Bank Subordinated Notes
Debt Instrument [Line Items]
Date Established			Mar. 10, 2016
Maturity			Jul. 30, 2025
Total Debt Outstanding			$ 70,000
Interest Rate (as percent)			3.33%
Coupon Structure			three month LIBOR + 3.128%
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%
Coupon Structure			three month LIBOR + 3.884%
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%
Coupon Structure			three month LIBOR + 2.775%
[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.