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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.