Salary Deferral Plans	12 Months Ended
Dec. 31, 2016
Salary Deferral Plan [Abstract]
Salary Deferral Plans	Note 14. Salary Deferral Plans Pinnacle Financial has a 401(k) retirement plan (the 401k Plan) covering all employees who elect to participate, subject to certain eligibility requirements. The Plan allows employees to defer up to 50% of their salary subject to regulatory limitations with Pinnacle Financial matching 100% of the first 4% of employee self-directed contributions during 2016, 2015, and 2014. Pinnacle Financial's expense associated with the matching component of the plan for each of the years in the three-year period ended December 31, 2016 was approximately $4.0 million, $2.7 million and $2.4 million, respectively, and is included in the accompanying consolidated statements of operations in salaries and employee benefits expense. Pinnacle Financial assumed nonqualified noncontributory supplemental retirement agreements (the Cavalry SRAs) for certain directors and executive officers of Cavalry Bancorp, Inc. (Cavalry), which Pinnacle Financial acquired in 2006. During 2007, Pinnacle Financial offered a settlement to all participants in the Cavalry SRAs with eleven participants accepting the settlement. Two individuals remain as participants in the Cavalry SRAs. At December 31, 2016, 2015 and 2014, included in other liabilities is $1.2 million, $1.3 million, and $1.4 million, respectively, which represents the net present value of the future obligation owed the two remaining participants in the Cavalry SRAs using a discount rate of 5% at December 31, 2016, 2015 and 2014. In conjunction with the acquisition of CapitalMark, Pinnacle assumed a liability of $5.0 million associated with existing supplemental executive retirement plans. These plans provide benefits for former CapitalMark executives and will be paid out over the next 23 years. In conjunction with the acquisition of Avenue, Pinnacle assumed a liability of $8.0 million associated with existing supplemental executive retirement plans. These plans provide benefits for former Avenue executives and will be paid out over the next 26 years. The balance of all outstanding supplemental executive retirement plans at December 31, 2016 and 2015 is $14.2 million and $6.3 million, respectively, and is included in other liabilities in the accompanying consolidated balance sheets.

Note 14. Salary Deferral Plans

Pinnacle Financial has a 401(k) retirement plan (the 401k Plan) covering all employees who elect to participate, subject to certain eligibility requirements. The Plan allows employees to defer up to 50% of their salary subject to regulatory limitations with Pinnacle Financial matching 100% of the first 4% of employee self-directed contributions during 2016, 2015, and 2014. Pinnacle Financial's expense associated with the matching component of the plan for each of the years in the three-year period ended December 31, 2016 was approximately $4.0 million, $2.7 million and $2.4 million, respectively, and is included in the accompanying consolidated statements of operations in salaries and employee benefits expense.

Pinnacle Financial assumed nonqualified noncontributory supplemental retirement agreements (the Cavalry SRAs) for certain directors and executive officers of Cavalry Bancorp, Inc. (Cavalry), which Pinnacle Financial acquired in 2006. During 2007, Pinnacle Financial offered a settlement to all participants in the Cavalry SRAs with eleven participants accepting the settlement. Two individuals remain as participants in the Cavalry SRAs. At December 31, 2016, 2015 and 2014, included in other liabilities is $1.2 million, $1.3 million, and $1.4 million, respectively, which represents the net present value of the future obligation owed the two remaining participants in the Cavalry SRAs using a discount rate of 5% at December 31, 2016, 2015 and 2014.

In conjunction with the acquisition of CapitalMark, Pinnacle assumed a liability of $5.0 million associated with existing supplemental executive retirement plans. These plans provide benefits for former CapitalMark executives and will be paid out over the next 23 years. In conjunction with the acquisition of Avenue, Pinnacle assumed a liability of $8.0 million associated with existing supplemental executive retirement plans. These plans provide benefits for former Avenue executives and will be paid out over the next 26 years.

The balance of all outstanding supplemental executive retirement plans at December 31, 2016 and 2015 is $14.2 million and $6.3 million, respectively, and is included in other liabilities in the accompanying consolidated balance sheets.