Commitments and Contingent Liabilities	3 Months Ended
Mar. 31, 2013
Commitments and Contingent Liabilities [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 March 31, 2013, these commitments amounted to $1.1 billion. Standby letters of credit are generally issued on behalf of an applicant (our 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 March 31, 2013, these commitments amounted to $68.6 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 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 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 commitments. At March 31, 2013, and December 31, 2012, Pinnacle Financial had accrued $2.9 million and $1.9 million, respectively, for the inherent risks associated with these off balance sheet commitments. At March 31, 2013, approximately $2.0 million was specifically attributable to one standby letter of credit. Subsequent to March 31, 2013, Pinnacle Bank funded the standby letter of credit and recorded a specific allowance in an amount equal to the specific off-balance sheet allowance. Accordingly, the off-balance sheet allowance related to this one credit will be reduced in the second quarter of 2013. During the fourth quarter of 2011, a customer of Pinnacle Bank filed a putative class action lawsuit (styled John Higgins, et al, v. Pinnacle Financial Partners, Inc., d/b/a Pinnacle National Bank) in Davidson County, Tennessee Circuit Court against Pinnacle Bank and Pinnacle Financial, on his own behalf, as well as on behalf of a purported class of Pinnacle Bank's customers within the State of Tennessee alleging that Pinnacle Bank's method of ordering debit card transactions had caused customers of Pinnacle Bank to incur higher overdraft charges than had a different method been used. In support of his claims, the plaintiff asserts theories of breach of contract, breach of implied covenant of good faith and fair dealing, unjust enrichment of unconscionability. The plaintiff is seeking, among other remedies, an award of unspecified compensatory damages, pre-judgment interest, costs and attorneys' fees. Pinnacle Financial and Pinnacle Bank are vigorously contesting this matter. On January 17, 2012, Pinnacle Financial and Pinnacle Bank filed a motion to dismiss the complaint. The motion to dismiss was granted without prejudice to Pinnacle Financial and denied as to Pinnacle Bank on April 13, 2012, and Pinnacle Bank filed an answer on May 30, 2012. Based on our current knowledge, Pinnacle Financial does not believe that any liability arising from this legal matter will have a material adverse effect on Pinnacle Financial's consolidated financial condition, operating results or cash flows. 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 March 31, 2013 will not have a material impact on Pinnacle Financial's financial statements.

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 March 31, 2013, these commitments amounted to $1.1 billion.

Standby letters of credit are generally issued on behalf of an applicant (our 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 March 31, 2013, these commitments amounted to $68.6 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 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 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 commitments. At March 31, 2013, and December 31, 2012, Pinnacle Financial had accrued $2.9 million and $1.9 million, respectively, for the inherent risks associated with these off balance sheet commitments. At March 31, 2013, approximately $2.0 million was specifically attributable to one standby letter of credit. Subsequent to March 31, 2013, Pinnacle Bank funded the standby letter of credit and recorded a specific allowance in an amount equal to the specific off-balance sheet allowance. Accordingly, the off-balance sheet allowance related to this one credit will be reduced in the second quarter of 2013.

During the fourth quarter of 2011, a customer of Pinnacle Bank filed a putative class action lawsuit (styled John Higgins, et al, v. Pinnacle Financial Partners, Inc., d/b/a Pinnacle National Bank) in Davidson County, Tennessee Circuit Court against Pinnacle Bank and Pinnacle Financial, on his own behalf, as well as on behalf of a purported class of Pinnacle Bank's customers within the State of Tennessee alleging that Pinnacle Bank's method of ordering debit card transactions had caused customers of Pinnacle Bank to incur higher overdraft charges than had a different method been used. In support of his claims, the plaintiff asserts theories of breach of contract, breach of implied covenant of good faith and fair dealing, unjust enrichment of unconscionability. The plaintiff is seeking, among other remedies, an award of unspecified compensatory damages, pre-judgment interest, costs and attorneys' fees. Pinnacle Financial and Pinnacle Bank are vigorously contesting this matter. On January 17, 2012, Pinnacle Financial and Pinnacle Bank filed a motion to dismiss the complaint. The motion to dismiss was granted without prejudice to Pinnacle Financial and denied as to Pinnacle Bank on April 13, 2012, and Pinnacle Bank filed an answer on May 30, 2012. Based on our current knowledge, Pinnacle Financial does not believe that any liability arising from this legal matter will have a material adverse effect on Pinnacle Financial's consolidated financial condition, operating results or cash flows.

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 March 31, 2013 will not have a material impact on Pinnacle Financial's financial statements.