Commitments and Contingent Liabilities	12 Months Ended
Dec. 31, 2016
Commitments and Contingent Liabilities [Abstract]
Commitments and Contingent Liabilities	Note 13. 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 December 31, 2016, these commitments amounted to $3.374 billion, of which approximately $413.7 million 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 December 31, 2016, these commitments amounted to $131.4 million. Pinnacle Financial 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 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 would only be reflected if drawn upon. 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 our customers default on their resulting obligation to us, Pinnacle Financial's maximum exposure to credit loss, without consideration of collateral, is represented by the contractual amount of those instruments. At December 31, 2016, Pinnacle Financial had accrued $1.1 million for the inherent risks associated with 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 resolution of these routine claims outstanding at December 31, 2016 will not have a material impact on Pinnacle Financial's consolidated financial condition, operating results or cash flows. On May 9, 2016 a purported class action complaint was filed in the Chancery Court for the State of Tennessee, 20th Judicial District at Nashville, styled Stephen Bushansky, on behalf of himself and all others similarly situated, Plaintiff, versus Avenue Financial Holdings, Inc. Ronald L. Samuels, Kent Cleaver, David G. Anderson, Agenia Clark, James F. Deutsch, Marty Dickens, Patrick G. Emery, Nancy Falls, Joseph C. Galante, David Ingram. Stephen Moore, Ken Robold, Karen Saul and Pinnacle Financial Partners, Inc., Defendants (Case No. 16-489-IV). The complaint alleged that the individual defendants breached their fiduciary duties by, among other things, approving the sale of Avenue for an inadequate price as the result of a flawed sales process, agreeing to the inclusion of unreasonable deal protection devices in the Avenue Merger Agreement, approving the Avenue Merger in order to receive benefits not equally shared by all other shareholders of Avenue, and issuing materially misleading and incomplete disclosures to Avenue's shareholders. The lawsuit also alleged claims against Avenue and Pinnacle Financial for aiding and abetting the individual defendants' breaches of fiduciary duties. The plaintiff purported to seek class-wide relief, including but not limited to monetary damages and an award of interest, attorney's fees, and expenses. On May 18, 2016, the Bushansky litigation was transferred to the Davidson County, Tennessee Business Court Pilot Project (the "Business Court"). On June 10, 2016, the parties entered into a memorandum of understanding with the plaintiff regarding a settlement of the Bushansky litigation and a release and dismissal of all claims which were or could have been asserted therein. Pursuant to the terms of the settlement, Avenue and Pinnacle Financial agreed to make certain supplemental disclosures to the definitive proxy statement/prospectus. Those supplemental disclosures were issued on June 13, 2016. On October 18, 2016, the parties finalized a formal Stipulation of Settlement, which the parties submitted to the Business Court for approval along with a proposed Order Granting Preliminary Approval of Settlement, Approving Form of Notice to Class, and Setting Final Settlement Hearing ("Preliminary Approval Order"), a proposed Notice of Pendency and Proposed Settlement of Class Action ("Notice"), and a proposed Final Order and Judgment. Plaintiff also indicated that it would request from the Business Court an award of $300,000 in attorneys' fees and expenses, and defendants agreed not to object to a request in this amount. On October 25, 2016, the Business Court issued a Preliminary Approval Order preliminarily approving the settlement and certifying a class, and providing for mailing of the Notice to class members. On December 16, 2016, following mailing of the Notice to the class in accordance with the Preliminary Approval Order and a hearing on the proposed settlement, the Business Court entered the Final Order and Judgment approving the proposed settlement, awarding plaintiff $300,000 in attorneys' fees and expenses, and dismissing the action with prejudice. The fact of the settlement and Pinnacle Financial's and Avenue's agreement to make the supplemental disclosures in connection therewith should not be construed as an admission of wrongdoing or liability by any defendant. The defendants have vigorously denied, and continue to vigorously deny, any wrongdoing or liability with respect to the facts and claims asserted, or which could have been asserted, in the Bushansky litigation, including that they have committed any violations of law or breach of fiduciary duty, aided and abetted any violations of law or breaches of fiduciary duty, acted improperly in any way or have any liability or owe any damages of any kind to the plaintiff or the purported class. Pinnacle Financial believes the claims asserted in the Bushansky action are without merit, but entered into the settlement to avoid the costs, risks and uncertainties inherent in litigation.

Note 13. 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 December 31, 2016, these commitments amounted to $3.374 billion, of which approximately $413.7 million 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 December 31, 2016, these commitments amounted to $131.4 million.

Pinnacle Financial 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 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 would only be reflected if drawn upon. 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 our customers default on their resulting obligation to us, Pinnacle Financial's maximum exposure to credit loss, without consideration of collateral, is represented by the contractual amount of those instruments. At December 31, 2016, Pinnacle Financial had accrued $1.1 million for the inherent risks associated with 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 resolution of these routine claims outstanding at December 31, 2016 will not have a material impact on Pinnacle Financial's consolidated financial condition, operating results or cash flows.

On May 9, 2016 a purported class action complaint was filed in the Chancery Court for the State of Tennessee, 20th Judicial District at Nashville, styled Stephen Bushansky, on behalf of himself and all others similarly situated, Plaintiff, versus Avenue Financial Holdings, Inc. Ronald L. Samuels, Kent Cleaver, David G. Anderson, Agenia Clark, James F. Deutsch, Marty Dickens, Patrick G. Emery, Nancy Falls, Joseph C. Galante, David Ingram. Stephen Moore, Ken Robold, Karen Saul and Pinnacle Financial Partners, Inc., Defendants (Case No. 16-489-IV). The complaint alleged that the individual defendants breached their fiduciary duties by, among other things, approving the sale of Avenue for an inadequate price as the result of a flawed sales process, agreeing to the inclusion of unreasonable deal protection devices in the Avenue Merger Agreement, approving the Avenue Merger in order to receive benefits not equally shared by all other shareholders of Avenue, and issuing materially misleading and incomplete disclosures to Avenue's shareholders. The lawsuit also alleged claims against Avenue and Pinnacle Financial for aiding and abetting the individual defendants' breaches of fiduciary duties. The plaintiff purported to seek class-wide relief, including but not limited to monetary damages and an award of interest, attorney's fees, and expenses. On May 18, 2016, the Bushansky litigation was transferred to the Davidson County, Tennessee Business Court Pilot Project (the "Business Court").

On June 10, 2016, the parties entered into a memorandum of understanding with the plaintiff regarding a settlement of the Bushansky litigation and a release and dismissal of all claims which were or could have been asserted therein. Pursuant to the terms of the settlement, Avenue and Pinnacle Financial agreed to make certain supplemental disclosures to the definitive proxy statement/prospectus. Those supplemental disclosures were issued on June 13, 2016.

On October 18, 2016, the parties finalized a formal Stipulation of Settlement, which the parties submitted to the Business Court for approval along with a proposed Order Granting Preliminary Approval of Settlement, Approving Form of Notice to Class, and Setting Final Settlement Hearing ("Preliminary Approval Order"), a proposed Notice of Pendency and Proposed Settlement of Class Action ("Notice"), and a proposed Final Order and Judgment. Plaintiff also indicated that it would request from the Business Court an award of $300,000 in attorneys' fees and expenses, and defendants agreed not to object to a request in this amount. On October 25, 2016, the Business Court issued a Preliminary Approval Order preliminarily approving the settlement and certifying a class, and providing for mailing of the Notice to class members. On December 16, 2016, following mailing of the Notice to the class in accordance with the Preliminary Approval Order and a hearing on the proposed settlement, the Business Court entered the Final Order and Judgment approving the proposed settlement, awarding plaintiff $300,000 in attorneys' fees and expenses, and dismissing the action with prejudice.

The fact of the settlement and Pinnacle Financial's and Avenue's agreement to make the supplemental disclosures in connection therewith should not be construed as an admission of wrongdoing or liability by any defendant. The defendants have vigorously denied, and continue to vigorously deny, any wrongdoing or liability with respect to the facts and claims asserted, or which could have been asserted, in the Bushansky litigation, including that they have committed any violations of law or breach of fiduciary duty, aided and abetted any violations of law or breaches of fiduciary duty, acted improperly in any way or have any liability or owe any damages of any kind to the plaintiff or the purported class. Pinnacle Financial believes the claims asserted in the Bushansky action are without merit, but entered into the settlement to avoid the costs, risks and uncertainties inherent in litigation.