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Acquired Loans Part 5 (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Acquired Loans, Aging [Abstract] |  |  |  |
Current | $ 129,643 |  | $ 68,491 |
Past Due 30-89 Days | 8,017 |  | 6,498 |
Past Due Greater Than 90 Days | 9,000 | [1] | 5,687 | [1]
Nonaccrual | 953 | [2] | 491 | [2]
Subtotal | 17,017 |  | 12,185 |
Total acquired loans | 147,613 |  | 81,167 |
Percentage of risk of losses incurred on acquired covered loans (in hundredths) | 20.00% |  | 20.00% |
Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 54,005 |  | 64,356 |
Past Due 30-89 Days | 4,566 |  | 6,272 |
Past Due Greater Than 90 Days | 5,199 | [1] | 5,685 | [1]
Nonaccrual | 733 | [2] | 491 | [2]
Subtotal | 9,765 |  | 11,957 |
Total acquired loans | 64,503 |  | 76,804 |
Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 75,638 |  | 4,135 | [3]
Past Due 30-89 Days | 3,451 |  | 226 | [3]
Past Due Greater Than 90 Days | 3,801 | [1] | 2 | [1],[3]
Nonaccrual | 220 | [2] | 0 | [2],[3]
Subtotal | 7,252 |  | 228 | [3]
Total acquired loans | 83,110 |  | 4,363 | [3]
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 2,770 |  | 2,566 |
Past Due 30-89 Days | 257 |  | 253 |
Past Due Greater Than 90 Days | 242 | [1] | 1,004 | [1]
Nonaccrual | 445 | [2] | 386 | [2]
Subtotal | 499 |  | 1,257 |
Total acquired loans | 3,714 |  | 4,209 |
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 7,836 |  | 0 | [3]
Past Due 30-89 Days | 2,181 |  | 0 | [3]
Past Due Greater Than 90 Days | 1,487 | [1] | 0 | [1],[3]
Nonaccrual | 0 | [2] | 0 | [2],[3]
Subtotal | 3,668 |  | 0 | [3]
Total acquired loans | 11,504 |  | 0 | [3]
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 21,397 |  | 28,284 |
Past Due 30-89 Days | 1,936 |  | 1,339 |
Past Due Greater Than 90 Days | 1,379 | [1] | 2,159 | [1]
Nonaccrual | 237 | [2] | 92 | [2]
Subtotal | 3,315 |  | 3,498 |
Total acquired loans | 24,949 |  | 31,874 |
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 16,211 |  | 71 | [3]
Past Due 30-89 Days | 435 |  | 5 | [3]
Past Due Greater Than 90 Days | 1,325 | [1] | 0 | [1],[3]
Nonaccrual | 61 | [2] | 0 | [2],[3]
Subtotal | 1,760 |  | 5 | [3]
Total acquired loans | 18,032 |  | 76 | [3]
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 23,174 |  | 23,962 |
Past Due 30-89 Days | 1,603 |  | 4,464 |
Past Due Greater Than 90 Days | 3,514 | [1] | 2,463 | [1]
Nonaccrual | 0 | [2] | 0 | [2]
Subtotal | 5,117 |  | 6,927 |
Total acquired loans | 28,291 |  | 30,889 |
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 45,343 |  | 0 | [3]
Past Due 30-89 Days | 661 |  | 0 | [3]
Past Due Greater Than 90 Days | 951 | [1] | 0 | [1],[3]
Nonaccrual | 159 | [2] | 0 | [2],[3]
Subtotal | 1,612 |  | 0 | [3]
Total acquired loans | 47,114 |  | 0 | [3]
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 3,935 |  | 4,936 |
Past Due 30-89 Days | 189 |  | 176 |
Past Due Greater Than 90 Days | 64 | [1] | 14 | [1]
Nonaccrual | 10 | [2] | 0 | [2]
Subtotal | 253 |  | 190 |
Total acquired loans | 4,198 |  | 5,126 |
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 349 |  | 0 | [3]
Past Due 30-89 Days | 29 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 | [1] | 0 | [1],[3]
Nonaccrual | 0 | [2] | 0 | [2],[3]
Subtotal | 29 |  | 0 | [3]
Total acquired loans | 378 |  | 0 | [3]
Commercial And Industrial Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 1,610 |  | 2,876 |
Past Due 30-89 Days | 152 |  | 37 |
Past Due Greater Than 90 Days | 0 | [1] | 45 | [1]
Nonaccrual | 41 | [2] | 13 | [2]
Subtotal | 152 |  | 82 |
Total acquired loans | 1,803 |  | 2,971 |
Commercial And Industrial Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 3,289 |  | 50 | [3]
Past Due 30-89 Days | 65 |  | 19 | [3]
Past Due Greater Than 90 Days | 17 | [1] | 0 | [1],[3]
Nonaccrual | 0 | [2] | 0 | [2],[3]
Subtotal | 82 |  | 19 | [3]
Total acquired loans | 3,371 |  | 69 | [3]
Consumer Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 172 |  | 290 |
Past Due 30-89 Days | 0 |  | 0 |
Past Due Greater Than 90 Days | 0 | [1] | 0 | [1]
Nonaccrual | 0 | [2] | 0 | [2]
Subtotal | 0 |  | 0 |
Total acquired loans | 172 |  | 290 |
Consumer Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 2,474 |  | 3,942 | [3]
Past Due 30-89 Days | 80 |  | 202 | [3]
Past Due Greater Than 90 Days | 21 | [1] | 2 | [1],[3]
Nonaccrual | 0 | [2] | 0 | [2],[3]
Subtotal | 101 |  | 204 | [3]
Total acquired loans | 2,575 |  | 4,146 | [3]
Other Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 947 |  | 1,442 |
Past Due 30-89 Days | 429 |  | 3 |
Past Due Greater Than 90 Days | 0 | [1] | 0 | [1]
Nonaccrual | 0 | [2] | 0 | [2]
Subtotal | 429 |  | 3 |
Total acquired loans | 1,376 |  | 1,445 |
Other Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 136 |  | 72 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 | [1] | 0 | [1],[3]
Nonaccrual | 0 | [2] | 0 | [2],[3]
Subtotal | 0 |  | 0 | [3]
Total acquired loans | 136 |  | 72 | [3]
Commercial Portfolio Segment [Member] | Pass [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 45,235 |  | 23,810 |
Commercial Portfolio Segment [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 15,883 | [4] | 23,786 | [4]
Commercial Portfolio Segment [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 29,352 |  | 24 | [3]
Commercial Portfolio Segment [Member] | Special Mention [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 19,395 |  | 8,326 |
Commercial Portfolio Segment [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 6,310 | [4] | 8,326 | [4]
Commercial Portfolio Segment [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 13,085 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Substandard [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 44,993 |  | 13,484 |
Commercial Portfolio Segment [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 18,950 | [4] | 13,442 | [4]
Commercial Portfolio Segment [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 26,043 |  | 42 | [3]
Commercial Portfolio Segment [Member] | Doubtful [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,924 |  | 3,683 |
Commercial Portfolio Segment [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 2,189 | [4] | 3,683 | [4]
Commercial Portfolio Segment [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,735 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 113,547 |  | 49,303 |
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 43,332 | [4] | 49,237 | [4]
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 70,215 |  | 66 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,159 | [4] | 1,212 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 2,227 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 18 | [4] | 194 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 882 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,275 | [4] | 1,425 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 6,207 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 742 | [4] | 909 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 835 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,194 | [4] | 3,740 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 10,151 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,575 | [4] | 6,402 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 4,798 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,444 | [4] | 1,256 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 808 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 2,519 | [4] | 1,943 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,569 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 83 | [4] | 19 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 23 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 7,621 | [4] | 9,620 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 9,198 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 10,295 | [4] | 13,302 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 19,105 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,186 | [4] | 5,275 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 11,005 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 13,024 | [4] | 8,932 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 16,038 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 810 | [4] | 2,134 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 877 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 27,315 | [4] | 29,643 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 47,025 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 361 | [4] | 878 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 208 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 346 | [4] | 429 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 31 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,486 | [4] | 658 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 122 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 86 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 2,193 | [4] | 2,051 | [4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 361 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 255 | [4] | 1,780 | [4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 2,929 |  | 27 | [3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,316 | [4] | 1,109 | [4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 359 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 215 | [4] | 82 | [4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 83 |  | 42 | [3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 17 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,803 | [4] | 2,971 | [4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 3,371 |  | 69 | [3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 0 | [4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Pass [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 238 | [4] | 212 | [4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 85 |  | (3) | [3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 | [4] | 63 | [4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 431 | [4] | 402 | [4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 24 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 537 | [4] | 535 | [4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 0 |  | 0 | [3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 1,206 | [4] | 1,212 | [4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Commercial Loans [Abstract] |  |  |  |
Acquired loans | 109 |  | (3) | [3]
Consumer Portfolio Segment [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 30,697 |  | 28,415 |
Past Due 30-89 Days | 1,866 |  | 1,380 |
Past Due Greater Than 90 Days | 1,394 |  | 2,031 |
Nonaccrual | 109 |  | 38 |
Subtotal | 34,066 |  | 31,864 |
Total acquired loans | 147,613 |  | 81,167 |
Consumer Portfolio Segment [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 18,263 | [4] | 24,326 | [4]
Past Due 30-89 Days | 1,613 | [4] | 1,173 | [4]
Past Due Greater Than 90 Days | 1,247 | [4] | 2,030 | [4]
Nonaccrual | 48 | [4] | 38 | [4]
Subtotal | 21,171 | [4] | 27,567 | [4]
Total acquired loans | 64,503 | [4] | 76,804 | [4]
Consumer Portfolio Segment [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 12,434 |  | 4,089 | [3]
Past Due 30-89 Days | 253 |  | 207 | [3]
Past Due Greater Than 90 Days | 147 |  | 1 | [3]
Nonaccrual | 61 |  | 0 | [3]
Subtotal | 12,895 |  | 4,297 | [3]
Total acquired loans | 83,110 |  | 4,363 | [3]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 311 | [4] | 448 | [4]
Past Due 30-89 Days | 209 | [4] | 18 | [4]
Past Due Greater Than 90 Days | 0 | [4] | 3 | [4]
Nonaccrual | 0 | [4] | 0 | [4]
Subtotal | 520 | [4] | 469 | [4]
Total acquired loans | 3,714 | [4] | 4,209 | [4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 1,314 |  | 0 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 39 |  | 0 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 1,353 |  | 0 | [3]
Total acquired loans | 11,504 |  | 0 | [3]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 14,982 | [4] | 19,159 | [4]
Past Due 30-89 Days | 1,105 | [4] | 1,044 | [4]
Past Due Greater Than 90 Days | 1,203 | [4] | 2,013 | [4]
Nonaccrual | 38 | [4] | 38 | [4]
Subtotal | 17,328 | [4] | 22,254 | [4]
Total acquired loans | 24,949 | [4] | 31,874 | [4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 8,513 |  | 71 | [3]
Past Due 30-89 Days | 173 |  | 5 | [3]
Past Due Greater Than 90 Days | 87 |  | 0 | [3]
Nonaccrual | 61 |  | 0 | [3]
Subtotal | 8,834 |  | 76 | [3]
Total acquired loans | 18,032 |  | 76 | [3]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 807 | [4] | 1,246 | [4]
Past Due 30-89 Days | 169 | [4] | 0 | [4]
Past Due Greater Than 90 Days | 0 | [4] | 0 | [4]
Nonaccrual | 0 | [4] | 0 | [4]
Subtotal | 976 | [4] | 1,246 | [4]
Total acquired loans | 28,291 | [4] | 30,889 | [4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 89 |  | 0 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 |  | 0 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 89 |  | 0 | [3]
Total acquired loans | 47,114 |  | 0 | [3]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 1,821 | [4] | 2,953 | [4]
Past Due 30-89 Days | 130 | [4] | 108 | [4]
Past Due Greater Than 90 Days | 44 | [4] | 14 | [4]
Nonaccrual | 10 | [4] | 0 | [4]
Subtotal | 2,005 | [4] | 3,075 | [4]
Total acquired loans | 4,198 | [4] | 5,126 | [4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 17 |  | 0 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 |  | 0 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 17 |  | 0 | [3]
Total acquired loans | 378 |  | 0 | [3]
Consumer Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 0 | [4] | 0 | [4]
Past Due 30-89 Days | 0 | [4] | 0 | [4]
Past Due Greater Than 90 Days | 0 | [4] | 0 | [4]
Nonaccrual | 0 | [4] | 0 | [4]
Subtotal | 0 | [4] | 0 | [4]
Total acquired loans | 1,803 | [4] | 2,971 | [4]
Consumer Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 0 |  | 0 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 |  | 0 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 0 |  | 0 | [3]
Total acquired loans | 3,371 |  | 69 | [3]
Consumer Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 172 | [4] | 290 | [4]
Past Due 30-89 Days | 0 | [4] | 0 | [4]
Past Due Greater Than 90 Days | 0 | [4] | 0 | [4]
Nonaccrual | 0 | [4] | 0 | [4]
Subtotal | 172 | [4] | 290 | [4]
Total acquired loans | 172 | [4] | 290 | [4]
Consumer Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 2,474 |  | 3,943 | [3]
Past Due 30-89 Days | 80 |  | 202 | [3]
Past Due Greater Than 90 Days | 21 |  | 1 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 2,575 |  | 4,146 | [3]
Total acquired loans | 2,575 |  | 4,146 | [3]
Consumer Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Covered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 170 | [4] | 230 | [4]
Past Due 30-89 Days | 0 | [4] | 3 | [4]
Past Due Greater Than 90 Days | 0 | [4] | 0 | [4]
Nonaccrual | 0 | [4] | 0 | [4]
Subtotal | 170 | [4] | 233 | [4]
Total acquired loans | 1,376 | [4] | 1,445 | [4]
Consumer Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Noncovered [Member] |  |  |  |
Acquired Loans, Aging [Abstract] |  |  |  |
Current | 27 |  | 75 | [3]
Past Due 30-89 Days | 0 |  | 0 | [3]
Past Due Greater Than 90 Days | 0 |  | 0 | [3]
Nonaccrual | 0 |  | 0 | [3]
Subtotal | 27 |  | 75 | [3]
Total acquired loans | $ 136 |  | $ 72 | [3]
[1] | Past due greater than 90 days but still accruing interest.
[2] | Acquired loans not accounted for under FASB ASC Topic 310-30.
[3] | Acquired noncovered loans were included in LHFI at December 31, 2011.
[4] | Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

X
- Definition Acquired loans that are less than 90 days past due but more than 29 days past due. + References No definition available. + Details
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Namespace Prefix: | trmk_
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X
- Details
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Balance Type: | na
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- Definition The carrying value of acquired loans during the period. + References No definition available. + Details
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- Definition The carrying value of acquired consumer loans during the period. + References No definition available. + Details
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Namespace Prefix: | trmk_
Data Type: | xbrli:monetaryItemType
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- Definition The carrying value of acquired loans considered as past due. + References No definition available. + Details
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Namespace Prefix: | trmk_
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- Details
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- Definition Acquired loans more than 90 days past due. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Acquired loans that are on nonaccrual status as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | trmk_
Data Type: | xbrli:monetaryItemType
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X
- Definition Acquired loans that are current. + References No definition available. + Details
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Namespace Prefix: | trmk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of risk of losses incurred on acquired covered loans. + References No definition available. + Details
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Namespace Prefix: | trmk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant