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Allowance for Loan and Lease Losses (Allocation of Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | $ 1,475,149 | $ 1,788,136 | $ 1,475,149 | $ 1,788,136 |
Allowance for loan and lease losses | 211,950 |  | 211,950 |  | $ 206,216
Loans and Leases Receivable, Net Amount | 21,085,030 |  | 21,085,030 |  | 20,033,774
PCI Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Acquired loans which have adverse change in expected cash flows | 325,900 |  | 325,900 |  | 469,300
Provision for Loan, Lease, and Other Losses | 77 | 2,769 | (4,066) | (1,370) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 680 | 614 | 2,702 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Commercial | Construction and land development |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 74 | 632 | (728) | 1,148 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 0 | 97 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Commercial | Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 406 | 2,187 | (1,508) | (803) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 48 | 165 | 765 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Commercial | Other commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | (378) | 235 | (530) | 229 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 5 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Commercial | Commercial and industrial |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 101 | 118 | (59) | (514) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 39 | 0 | 324 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Noncommercial | Construction and land development |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 0 | 0 | 0 | (183) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Noncommercial | Consumer and Other |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | 29 | 29 | (72) | 650 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 1 | 73 | 463 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Noncommercial | Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | (134) | (281) | (863) | 21 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 15 | 371 | 295 |
Recoveries | 0 | 0 | 0 | 0 |
PCI Loans | Noncommercial | Revolving mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Provision for Loan, Lease, and Other Losses | (21) | (151) | (306) | (1,918) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 577 | 0 | 758 |
Recoveries | 0 | 0 | 0 | 0 |
Non-PCI Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Total impaired noncovered loans and leases | 136,000 |  | 136,000 |  | 150,367
Unpaid principal balance | 146,573 |  | 146,573 |  | 167,966
Impaired Financing Receivable, Related Allowance | 8,372 |  | 8,372 |  | 7,200
ALLL for loans and leases individually evaluated for impairment | 8,372 |  | 8,372 |  | 7,200
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 69,751 |  | 69,751 |  | 66,861
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 66,249 |  | 66,249 |  | 83,506
Financing Receivable, Individually Evaluated for Impairment | 136,000 |  | 136,000 |  | 150,367
Average balance | 132,572 | 151,108 | 135,925 | 132,864 |
Interest income recognized | 1,090 | 1,218 | 3,330 | 3,528 |
Provision for Loan, Lease, and Other Losses | 7,430 | (2,662) | 20,978 | 14,988 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 6,210 | 5,018 | 17,953 | 17,098 |
Recoveries | 2,645 | 2,737 | 7,389 | 7,179 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 191,946 |  | 191,946 |  | 182,704
Financing Receivable, Collectively Evaluated for Impairment | 20,292,780 |  | 20,292,780 |  | 19,139,107
Loans and Leases Receivable, Net Amount | 20,428,780 |  | 20,428,780 |  | 19,289,474
Non-PCI Loans | Commercial | Construction and land development |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 3,819 |  | 3,819 |  | 4,428
ALLL for loans and leases individually evaluated for impairment | 239 |  | 239 |  | 123
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,824 |  | 1,824 |  | 1,623
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,480 |  | 1,480 |  | 1,471
Financing Receivable, Individually Evaluated for Impairment | 3,304 |  | 3,304 |  | 3,094
Average balance | 3,297 | 3,257 | 3,232 | 3,148 |
Interest income recognized | 44 | 37 | 125 | 107 |
Provision for Loan, Lease, and Other Losses | 835 | 1,189 | 2,069 | 2,380 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 77 | 336 | 639 | 575 |
Recoveries | 69 | 129 | 278 | 295 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 17,757 |  | 17,757 |  | 16,165
Financing Receivable, Collectively Evaluated for Impairment | 638,854 |  | 638,854 |  | 617,258
Loans and Leases Receivable, Net Amount | 642,158 |  | 642,158 |  | 620,352
Non-PCI Loans | Commercial | Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 86,354 |  | 86,354 |  | 103,763
ALLL for loans and leases individually evaluated for impairment | 3,126 |  | 3,126 |  | 3,370
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 35,987 |  | 35,987 |  | 41,793
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 43,846 |  | 43,846 |  | 53,314
Financing Receivable, Individually Evaluated for Impairment | 79,833 |  | 79,833 |  | 95,107
Average balance | 78,994 | 99,613 | 83,794 | 88,614 |
Interest income recognized | 642 | 803 | 2,024 | 2,405 |
Provision for Loan, Lease, and Other Losses | (2,163) | (5,664) | (1,067) | (11,221) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 461 | 411 | 454 | 691 |
Recoveries | 378 | 794 | 992 | 1,878 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 66,241 |  | 66,241 |  | 66,526
Financing Receivable, Collectively Evaluated for Impairment | 8,699,299 |  | 8,699,299 |  | 8,179,441
Loans and Leases Receivable, Net Amount | 8,779,132 |  | 8,779,132 |  | 8,274,548
Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 1,923 |  | 1,923 |  | 863
ALLL for loans and leases individually evaluated for impairment | 118 |  | 118 |  | 289
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 585 |  | 585 |  | 305
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,016 |  | 1,016 |  | 122
Financing Receivable, Individually Evaluated for Impairment | 1,601 |  | 1,601 |  | 427
Average balance | 1,571 | 539 | 957 | 498 |
Interest income recognized | 13 | 6 | 25 | 7 |
Provision for Loan, Lease, and Other Losses | 150 | 291 | (34) | 522 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 0 | 178 |
Recoveries | 13 | 15 | 167 | 34 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 2,183 |  | 2,183 |  | 1,879
Financing Receivable, Collectively Evaluated for Impairment | 344,429 |  | 344,429 |  | 320,594
Loans and Leases Receivable, Net Amount | 346,030 |  | 346,030 |  | 321,021
Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 11,133 |  | 11,133 |  | 21,455
ALLL for loans and leases individually evaluated for impairment | 1,059 |  | 1,059 |  | 1,118
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 6,518 |  | 6,518 |  | 8,544
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 4,154 |  | 4,154 |  | 9,366
Financing Receivable, Individually Evaluated for Impairment | 10,672 |  | 10,672 |  | 17,910
Average balance | 9,676 | 17,005 | 11,722 | 13,815 |
Interest income recognized | 84 | 130 | 319 | 379 |
Provision for Loan, Lease, and Other Losses | 2,954 | (799) | 5,236 | 11,294 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 1,198 | 784 | 3,690 | 4,815 |
Recoveries | 328 | 296 | 1,330 | 899 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 44,933 |  | 44,933 |  | 41,998
Financing Receivable, Collectively Evaluated for Impairment | 2,496,495 |  | 2,496,495 |  | 2,351,048
Loans and Leases Receivable, Net Amount | 2,507,167 |  | 2,507,167 |  | 2,368,958
Non-PCI Loans | Commercial | Lease financing |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 1,153 |  | 1,153 |  | 1,956
ALLL for loans and leases individually evaluated for impairment | 45 |  | 45 |  | 213
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,003 |  | 1,003 |  | 1,651
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 143 |  | 143 |  | 104
Financing Receivable, Individually Evaluated for Impairment | 1,146 |  | 1,146 |  | 1,755
Average balance | 1,169 | 1,939 | 1,347 | 1,664 |
Interest income recognized | 14 | 21 | 49 | 55 |
Provision for Loan, Lease, and Other Losses | 274 | 424 | 337 | 843 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 132 | 7 | 93 | 28 |
Recoveries | 5 | 16 | 145 | 38 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 5,868 |  | 5,868 |  | 5,311
Financing Receivable, Collectively Evaluated for Impairment | 802,455 |  | 802,455 |  | 729,023
Loans and Leases Receivable, Net Amount | 803,601 |  | 803,601 |  | 730,778
Non-PCI Loans | Commercial | Other |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 532 |  | 532 |  | 1,260
ALLL for loans and leases individually evaluated for impairment | 22 |  | 22 |  | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 125 |  | 125 |  | 0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 318 |  | 318 |  | 1,183
Financing Receivable, Individually Evaluated for Impairment | 443 |  | 443 |  | 1,183
Average balance | 569 | 1,543 | 818 | 1,789 |
Interest income recognized | 6 | 20 | 30 | 20 |
Provision for Loan, Lease, and Other Losses | 183 | (58) | (109) | (2,100) |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 22 | 0 |
Recoveries | 170 | 45 | 384 | 91 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 2,086 |  | 2,086 |  | 1,855
Financing Receivable, Collectively Evaluated for Impairment | 325,905 |  | 325,905 |  | 313,649
Loans and Leases Receivable, Net Amount | 326,348 |  | 326,348 |  | 314,832
Non-PCI Loans | Noncommercial | Construction and land development |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 406 |  | 406 |  | 784
ALLL for loans and leases individually evaluated for impairment | 0 |  | 0 |  | 49
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 163 |  | 163 |  | 693
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 243 |  | 243 |  | 91
Financing Receivable, Individually Evaluated for Impairment | 406 |  | 406 |  | 784
Average balance | 408 | 1,027 | 459 | 821 |
Interest income recognized | 5 | 12 | 16 | 28 |
Provision for Loan, Lease, and Other Losses | 88 | 114 | 253 | 306 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 0 | 0 | 0 | 22 |
Recoveries | 0 | 3 | 3 | 74 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 1,741 |  | 1,741 |  | 1,436
Financing Receivable, Collectively Evaluated for Impairment | 233,977 |  | 233,977 |  | 219,289
Loans and Leases Receivable, Net Amount | 234,383 |  | 234,383 |  | 220,073
Non-PCI Loans | Noncommercial | Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 30,353 |  | 30,353 |  | 25,043
ALLL for loans and leases individually evaluated for impairment | 2,077 |  | 2,077 |  | 1,212
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 16,897 |  | 16,897 |  | 10,097
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 12,430 |  | 12,430 |  | 12,889
Financing Receivable, Individually Evaluated for Impairment | 29,327 |  | 29,327 |  | 22,986
Average balance | 28,008 | 19,945 | 25,497 | 17,376 |
Interest income recognized | 214 | 141 | 564 | 401 |
Provision for Loan, Lease, and Other Losses | 531 | 520 | 2,794 | 2,495 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 328 | 394 | 680 | 768 |
Recoveries | 334 | 314 | 394 | 757 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 14,536 |  | 14,536 |  | 12,893
Financing Receivable, Collectively Evaluated for Impairment | 2,784,587 |  | 2,784,587 |  | 2,672,999
Loans and Leases Receivable, Net Amount | 2,813,914 |  | 2,813,914 |  | 2,695,985
Non-PCI Loans | Noncommercial | Revolving mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 9,245 |  | 9,245 |  | 7,120
ALLL for loans and leases individually evaluated for impairment | 1,046 |  | 1,046 |  | 299
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 5,266 |  | 5,266 |  | 1,105
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,442 |  | 2,442 |  | 4,778
Financing Receivable, Individually Evaluated for Impairment | 7,708 |  | 7,708 |  | 5,883
Average balance | 7,373 | 5,064 | 6,701 | 4,022 |
Interest income recognized | 48 | 29 | 120 | 68 |
Provision for Loan, Lease, and Other Losses | 679 | 871 | 3,306 | 440 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 391 | 677 | 2,507 | 2,086 |
Recoveries | 256 | 363 | 502 | 843 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 16,226 |  | 16,226 |  | 15,672
Financing Receivable, Collectively Evaluated for Impairment | 2,565,378 |  | 2,565,378 |  | 2,517,223
Loans and Leases Receivable, Net Amount | 2,573,086 |  | 2,573,086 |  | 2,523,106
Non-PCI Loans | Noncommercial | Consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Unpaid principal balance | 1,655 |  | 1,655 |  | 1,294
ALLL for loans and leases individually evaluated for impairment | 640 |  | 640 |  | 527
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,383 |  | 1,383 |  | 1,050
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 177 |  | 177 |  | 188
Financing Receivable, Individually Evaluated for Impairment | 1,560 |  | 1,560 |  | 1,238
Average balance | 1,507 | 1,176 | 1,398 | 1,117 |
Interest income recognized | 20 | 19 | 58 | 58 |
Provision for Loan, Lease, and Other Losses | 3,899 | 450 | 8,193 | 10,029 |
Financing Receivable, Allowance for Credit Losses, Write-downs | 3,623 | 2,409 | 9,868 | 7,935 |
Recoveries | 1,092 | $ 762 | 3,194 | $ 2,270 |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 20,375 |  | 20,375 |  | 18,969
Financing Receivable, Collectively Evaluated for Impairment | 1,401,401 |  | 1,401,401 |  | 1,218,583
Loans and Leases Receivable, Net Amount | $ 1,402,961 |  | $ 1,402,961 |  | $ 1,219,821

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- Definition Acquired Loans Which Have Adverse Change In Expected Cash Flows + References No definition available. + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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