Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2012
Summary of Significant Accounting Policies [Abstract]
Nature of Operations	Nature of Operations: Renasant Corporation (referred to herein as the “Company”) owns and operates Renasant Bank (“Renasant Bank” or the “Bank”) and Renasant Insurance, Inc. The Company offers a diversified range of financial, fiduciary and insurance services to its retail and commercial customers through its subsidiaries and full service offices located throughout north and north central Mississippi, Tennessee, north and central Alabama and north Georgia.
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. For further information regarding the Company’s significant accounting policies, refer to the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 filed with the Securities and Exchange Commission on March 8, 2012.
Use of Estimates	Use of Estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Subsequent Events	Subsequent Events: The Company has evaluated, for consideration of recognition or disclosure, subsequent events that have occurred through the date of issuance of its financial statements, and has determined that no significant events occurred after September 30, 2012 but prior to the issuance of these financial statements that would have a material impact on its Consolidated Financial Statements.
Impact of Recently-Issued Accounting Standards and Pronouncements	Impact of Recently-Issued Accounting Standards and Pronouncements: In October 2012, the Financial Accounting Standards Board (“FASB”) issued an update to Accounting Standards Codification Topic (“ASC”) 805, “Business Combinations,” (“ASC 805”) concerning subsequent accounting for an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. The update prescribes that when changes in the cash flows expected to be collected on the indemnification asset occur as a result of the changes in the cash flows expected to be collected on the assets subject to indemnification, a reporting entity should subsequently account for the change in the measurement of the indemnification asset on the same basis as the change in the assets subject to indemnification. Any amortization of changes in value of the indemnification asset should be limited to the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets. This update to ASC 805 is effective for interim and annual reporting periods beginning on or after December 15, 2012 and should be applied retrospectively. The Company is currently in the process of evaluating the impact of adopting this update on accounting for changes in the value of the loss-share indemnification assets recorded in connection with its acquisitions assisted by the Federal Deposit Insurance Corporation (the “FDIC”).

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Nature of Operations: Renasant Corporation (referred to herein as the “Company”) owns and operates Renasant Bank (“Renasant Bank” or the “Bank”) and Renasant Insurance, Inc. The Company offers a diversified range of financial, fiduciary and insurance services to its retail and commercial customers through its subsidiaries and full service offices located throughout north and north central Mississippi, Tennessee, north and central Alabama and north Georgia.

Basis of Presentation

Basis of Presentation: The accompanying unaudited consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. For further information regarding the Company’s significant accounting policies, refer to the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 filed with the Securities and Exchange Commission on March 8, 2012.

Use of Estimates

Use of Estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Subsequent Events

Subsequent Events: The Company has evaluated, for consideration of recognition or disclosure, subsequent events that have occurred through the date of issuance of its financial statements, and has determined that no significant events occurred after September 30, 2012 but prior to the issuance of these financial statements that would have a material impact on its Consolidated Financial Statements.

Impact of Recently-Issued Accounting Standards and Pronouncements

Impact of Recently-Issued Accounting Standards and Pronouncements: In October 2012, the Financial Accounting Standards Board (“FASB”) issued an update to Accounting Standards Codification Topic (“ASC”) 805, “Business Combinations,” (“ASC 805”) concerning subsequent accounting for an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. The update prescribes that when changes in the cash flows expected to be collected on the indemnification asset occur as a result of the changes in the cash flows expected to be collected on the assets subject to indemnification, a reporting entity should subsequently account for the change in the measurement of the indemnification asset on the same basis as the change in the assets subject to indemnification. Any amortization of changes in value of the indemnification asset should be limited to the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets. This update to ASC 805 is effective for interim and annual reporting periods beginning on or after December 15, 2012 and should be applied retrospectively. The Company is currently in the process of evaluating the impact of adopting this update on accounting for changes in the value of the loss-share indemnification assets recorded in connection with its acquisitions assisted by the Federal Deposit Insurance Corporation (the “FDIC”).