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Loans and Allowance for Loan Losses (Loans Individually Evaluated for Impairment Disaggregated by Class) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | $ 95,507 |  | $ 55,034
Recorded Investment, With an allowance recorded | 135,234 |  | 58,392
Recorded Investment, Total | 230,741 |  | 113,426
Unpaid Principal Balance, With no related allowance recorded | 103,848 |  | 58,245
Unpaid Principal Balance, With an allowance recorded | 138,375 |  | 60,378
Unpaid Principal Balance, Total | 242,223 |  | 118,623
Related Allowance | 28,167 |  | 20,988
Average Recorded Investment, With no related allowance recorded | 75,271 | $ 19,242 |
Average Recorded Investment, With an allowance recorded | 96,813 | 16,256 |
Average Recorded Investment, Total | 172,084 | 35,498 |
Interest Income Recognized, With no related allowance recorded | 9 | 11 |
Interest Income Recognized, With an allowance recorded | 212 | 64 |
Interest Income Recognized, Total | 221 | 75 |
Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | 95,507 |  | 55,034
Recorded Investment, With an allowance recorded | 132,928 |  | 56,052
Recorded Investment, Total | 228,435 |  | 111,086
Unpaid Principal Balance, With no related allowance recorded | 103,848 |  | 58,245
Unpaid Principal Balance, With an allowance recorded | 136,032 |  | 57,996
Unpaid Principal Balance, Total | 239,880 |  | 116,241
Related Allowance | 28,160 |  | 20,955
Average Recorded Investment, With no related allowance recorded | 75,271 | 19,242 |
Average Recorded Investment, With an allowance recorded | 94,490 | 13,621 |
Average Recorded Investment, Total | 169,761 | 32,863 |
Interest Income Recognized, With no related allowance recorded | 9 | 11 |
Interest Income Recognized, With an allowance recorded | 212 | 64 |
Interest Income Recognized, Total | 221 | $ 75 |
Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded | 2,306 |  | 2,340
Recorded Investment, Total | 2,306 |  | 2,340
Unpaid Principal Balance, With an allowance recorded | 2,343 |  | 2,382
Unpaid Principal Balance, Total | 2,343 |  | 2,382
Related Allowance | $ 7 |  | 33
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded | $ 2,323 | $ 2,635 |
Average Recorded Investment, Total | $ 2,323 | $ 2,635 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |
Commercial Non-Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | $ 77,155 |  | 34,788
Recorded Investment, With an allowance recorded | 123,874 |  | 46,834
Recorded Investment, Total | 201,029 |  | 81,622
Unpaid Principal Balance, With no related allowance recorded | 85,295 |  | 37,285
Unpaid Principal Balance, With an allowance recorded | 125,744 |  | 47,703
Unpaid Principal Balance, Total | 211,039 |  | 84,988
Related Allowance | 26,502 |  | 19,031
Average Recorded Investment, With no related allowance recorded | 55,972 | $ 7,196 |
Average Recorded Investment, With an allowance recorded | 85,354 | 2,081 |
Average Recorded Investment, Total | $ 141,326 | 9,277 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded | $ 182 | 2 |
Interest Income Recognized, Total | 182 | 2 |
Commercial Non-Real Estate [Member] | Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | 77,155 |  | 34,788
Recorded Investment, With an allowance recorded | 123,874 |  | 46,834
Recorded Investment, Total | 201,029 |  | 81,622
Unpaid Principal Balance, With no related allowance recorded | 85,295 |  | 37,285
Unpaid Principal Balance, With an allowance recorded | 125,744 |  | 47,703
Unpaid Principal Balance, Total | 211,039 |  | 84,988
Related Allowance | 26,502 |  | $ 19,031
Average Recorded Investment, With no related allowance recorded | 55,972 | 7,196 |
Average Recorded Investment, With an allowance recorded | 85,354 | 2,081 |
Average Recorded Investment, Total | $ 141,326 | 9,277 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded | $ 182 | 2 |
Interest Income Recognized, Total | $ 182 | $ 2 |
Commercial Non-Real Estate [Member] | Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded |  |  |
Recorded Investment, Total |  |  |
Unpaid Principal Balance, With an allowance recorded |  |  |
Unpaid Principal Balance, Total |  |  |
Related Allowance |  |  |
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded |  |  |
Average Recorded Investment, Total |  |  |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | $ 5,939 |  | $ 7,785
Recorded Investment, With an allowance recorded | 8,760 |  | 8,746
Recorded Investment, Total | 14,699 |  | 16,531
Unpaid Principal Balance, With no related allowance recorded | 6,140 |  | 8,499
Unpaid Principal Balance, With an allowance recorded | 8,864 |  | 8,795
Unpaid Principal Balance, Total | 15,004 |  | 17,294
Related Allowance | 1,339 |  | 1,405
Average Recorded Investment, With no related allowance recorded | 6,862 | $ 9,563 |
Average Recorded Investment, With an allowance recorded | 8,753 | 7,738 |
Average Recorded Investment, Total | 15,615 | 17,301 |
Interest Income Recognized, With no related allowance recorded | 9 | 10 |
Interest Income Recognized, With an allowance recorded | 27 | 17 |
Interest Income Recognized, Total | 36 | 27 |
Commercial Real Estate [Member] | Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | 5,939 |  | 7,785
Recorded Investment, With an allowance recorded | 6,454 |  | 6,406
Recorded Investment, Total | 12,393 |  | 14,191
Unpaid Principal Balance, With no related allowance recorded | 6,140 |  | 8,499
Unpaid Principal Balance, With an allowance recorded | 6,521 |  | 6,413
Unpaid Principal Balance, Total | 12,661 |  | 14,912
Related Allowance | 1,332 |  | 1,372
Average Recorded Investment, With no related allowance recorded | 6,862 | 9,563 |
Average Recorded Investment, With an allowance recorded | 6,430 | 5,103 |
Average Recorded Investment, Total | 13,292 | 14,666 |
Interest Income Recognized, With no related allowance recorded | 9 | 10 |
Interest Income Recognized, With an allowance recorded | 27 | 17 |
Interest Income Recognized, Total | 36 | $ 27 |
Commercial Real Estate [Member] | Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded | 2,306 |  | 2,340
Recorded Investment, Total | 2,306 |  | 2,340
Unpaid Principal Balance, With an allowance recorded | 2,343 |  | 2,382
Unpaid Principal Balance, Total | 2,343 |  | 2,382
Related Allowance | $ 7 |  | $ 33
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded | $ 2,323 | $ 2,635 |
Average Recorded Investment, Total | $ 2,323 | $ 2,635 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |
Residential Mortgages [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded |  |  |
Recorded Investment, With an allowance recorded | $ 883 |  | $ 895
Recorded Investment, Total | $ 883 |  | $ 895
Unpaid Principal Balance, With no related allowance recorded |  |  |
Unpaid Principal Balance, With an allowance recorded | $ 1,394 |  | $ 1,405
Unpaid Principal Balance, Total | 1,394 |  | 1,405
Related Allowance | 125 |  | $ 127
Average Recorded Investment, With no related allowance recorded |  | $ 517 |
Average Recorded Investment, With an allowance recorded | 889 | 2,023 |
Average Recorded Investment, Total | $ 889 | 2,540 |
Interest Income Recognized, With no related allowance recorded |  | 1 |
Interest Income Recognized, With an allowance recorded | $ 2 | 11 |
Interest Income Recognized, Total | $ 2 | 12 |
Residential Mortgages [Member] | Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded |  |  |
Recorded Investment, With an allowance recorded | $ 883 |  | $ 895
Recorded Investment, Total | $ 883 |  | $ 895
Unpaid Principal Balance, With no related allowance recorded |  |  |
Unpaid Principal Balance, With an allowance recorded | $ 1,394 |  | $ 1,405
Unpaid Principal Balance, Total | 1,394 |  | 1,405
Related Allowance | 125 |  | $ 127
Average Recorded Investment, With no related allowance recorded |  | 517 |
Average Recorded Investment, With an allowance recorded | 889 | 2,023 |
Average Recorded Investment, Total | $ 889 | 2,540 |
Interest Income Recognized, With no related allowance recorded |  | 1 |
Interest Income Recognized, With an allowance recorded | $ 2 | 11 |
Interest Income Recognized, Total | $ 2 | $ 12 |
Residential Mortgages [Member] | Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded |  |  |
Recorded Investment, Total |  |  |
Unpaid Principal Balance, With an allowance recorded |  |  |
Unpaid Principal Balance, Total |  |  |
Related Allowance |  |  |
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded |  |  |
Average Recorded Investment, Total |  |  |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |
Consumer [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded |  |  |
Recorded Investment, With an allowance recorded | $ 58 |  | $ 152
Recorded Investment, Total | $ 58 |  | $ 152
Unpaid Principal Balance, With no related allowance recorded |  |  |
Unpaid Principal Balance, With an allowance recorded | $ 58 |  | $ 152
Unpaid Principal Balance, Total | 58 |  | 152
Related Allowance | 16 |  | $ 33
Average Recorded Investment, With no related allowance recorded |  | $ 51 |
Average Recorded Investment, With an allowance recorded | 105 | 13 |
Average Recorded Investment, Total | $ 105 | 64 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded | $ 1 | 2 |
Interest Income Recognized, Total | $ 1 | 2 |
Consumer [Member] | Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded |  |  |
Recorded Investment, With an allowance recorded | $ 58 |  | $ 152
Recorded Investment, Total | $ 58 |  | $ 152
Unpaid Principal Balance, With no related allowance recorded |  |  |
Unpaid Principal Balance, With an allowance recorded | $ 58 |  | $ 152
Unpaid Principal Balance, Total | 58 |  | 152
Related Allowance | 16 |  | $ 33
Average Recorded Investment, With no related allowance recorded |  | 51 |
Average Recorded Investment, With an allowance recorded | 105 | 13 |
Average Recorded Investment, Total | $ 105 | 64 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded | $ 1 | 2 |
Interest Income Recognized, Total | $ 1 | $ 2 |
Consumer [Member] | Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded |  |  |
Recorded Investment, Total |  |  |
Unpaid Principal Balance, With an allowance recorded |  |  |
Unpaid Principal Balance, Total |  |  |
Related Allowance |  |  |
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded |  |  |
Average Recorded Investment, Total |  |  |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |
Construction and Land Development [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | $ 12,413 |  | $ 12,461
Recorded Investment, With an allowance recorded | 1,659 |  | 1,765
Recorded Investment, Total | 14,072 |  | 14,226
Unpaid Principal Balance, With no related allowance recorded | 12,413 |  | 12,461
Unpaid Principal Balance, With an allowance recorded | 2,315 |  | 2,323
Unpaid Principal Balance, Total | 14,728 |  | 14,784
Related Allowance | 185 |  | 392
Average Recorded Investment, With no related allowance recorded | 12,437 | $ 1,915 |
Average Recorded Investment, With an allowance recorded | 1,712 | 4,401 |
Average Recorded Investment, Total | $ 14,149 | 6,316 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  | 32 |
Interest Income Recognized, Total |  | 32 |
Construction and Land Development [Member] | Originated Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With no related allowance recorded | $ 12,413 |  | 12,461
Recorded Investment, With an allowance recorded | 1,659 |  | 1,765
Recorded Investment, Total | 14,072 |  | 14,226
Unpaid Principal Balance, With no related allowance recorded | 12,413 |  | 12,461
Unpaid Principal Balance, With an allowance recorded | 2,315 |  | 2,323
Unpaid Principal Balance, Total | 14,728 |  | 14,784
Related Allowance | 185 |  | $ 392
Average Recorded Investment, With no related allowance recorded | 12,437 | 1,915 |
Average Recorded Investment, With an allowance recorded | 1,712 | 4,401 |
Average Recorded Investment, Total | $ 14,149 | 6,316 |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  | 32 |
Interest Income Recognized, Total |  | $ 32 |
Construction and Land Development [Member] | Acquired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment, With an allowance recorded |  |  |
Recorded Investment, Total |  |  |
Unpaid Principal Balance, With an allowance recorded |  |  |
Unpaid Principal Balance, Total |  |  |
Related Allowance |  |  |
Average Recorded Investment, With no related allowance recorded |  |  |
Average Recorded Investment, With an allowance recorded |  |  |
Average Recorded Investment, Total |  |  |
Interest Income Recognized, With no related allowance recorded |  |  |
Interest Income Recognized, With an allowance recorded |  |  |
Interest Income Recognized, Total |  |  |

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