XML 24 R33.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Business Combinations (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014
BancTrust acquisition [Member] |
Business Acquisition [Line Items] |
Statement of assets purchased and liabilities assumed | Trustmark recorded fair value adjustments based on the estimated fair value of certain acquired loans, premises and equipment, net and other real estate. During 2013, these measurement period adjustments resulted in a decrease in acquired noncovered loans of $6.8 million, a decrease in premises and equipment, net of $627 thousand, a decrease in other real estate of $2.6 million, an increase in the deferred tax asset of $3.4 million and an increase in goodwill of $6.3 million. Trustmark also recorded an adjustment to transfer $1.6 million of acquired property from premises and equipment, net to other real estate during 2013. During the first quarter of 2014, Trustmark recorded an additional measurement period adjustment that resulted in a $7.4 million decrease in goodwill with a corresponding increase in the deferred tax asset. These measurement period adjustments were presented on a retrospective basis, consistent with applicable accounting guidance. The purchase price allocation was finalized during the first quarter of 2014. The statement of assets purchased and liabilities assumed in the BancTrust merger is presented below at their adjusted estimated fair values as of the merger date of February 15, 2013 ($ in thousands):
Assets: |  |  |
Cash and due from banks |  | $ | 141,616 |
Securities available for sale |  |  | 528,016 |
Loans held for sale |  |  | 1,050 |
Acquired noncovered loans |  |  | 944,235 |
Premises and equipment, net |  |  | 54,952 |
Identifiable intangible assets |  |  | 33,498 |
Other real estate |  |  | 40,103 |
Other assets |  |  | 109,423 |
Total Assets |  |  | 1,852,893 |
Liabilities: |  |  |  |
Deposits |  |  | 1,740,254 |
Other borrowings |  |  | 64,051 |
Other liabilities |  |  | 16,761 |
Total Liabilities |  |  | 1,821,066 |
Net identified assets acquired at fair value |  |  | 31,827 |
Goodwill |  |  | 74,247 |
Net assets acquired at fair value |  | $ | 106,074 |
Bay Bank and Trust Company [Member] |
Business Acquisition [Line Items] |
Statement of assets purchased and liabilities assumed | The statement of assets purchased and liabilities assumed in the Bay Bank merger is presented below at their estimated fair values as of the merger date of March 16, 2012 ($ in thousands):
Assets: |  |  |
Cash and due from banks |  | $ | 88,154 |
Securities available for sale |  |  | 26,369 |
Acquired noncovered loans |  |  | 97,914 |
Premises and equipment, net |  |  | 9,466 |
Identifiable intangible assets |  |  | 7,017 |
Other real estate |  |  | 2,569 |
Other assets |  |  | 3,471 |
Total Assets |  |  | 234,960 |
Liabilities: |  |  |  |
Deposits |  |  | 208,796 |
Other liabilities |  |  | 526 |
Total Liabilities |  |  | 209,322 |
Net assets acquired at fair value |  |  | 25,638 |
Consideration paid to Bay Bank |  |  | 22,003 |
Bargain purchase gain |  |  | 3,635 |
Income taxes |  |  | - |
Bargain purchase gain, net of taxes |  | $ | 3,635 |

X
- Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1486-128463 + Details
Name: | us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=trmk_BanctrustAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=trmk_BayBankAndTrustCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |