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Allowance for Loan and Lease Losses (Allocation of Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | $ 1,266,395 | $ 1,693,372 |  |
Allowance for loan and lease losses | 218,795 | 206,216 | $ 204,466 | $ 233,394
Non-PCI Loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 150,189 | 167,966 |  |
ALLL for loans and leases individually evaluated for impairment | 9,210 | 7,200 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 79,491 | 66,861 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 56,908 | 83,506 |  |
Financing Receivable, Individually Evaluated for Impairment | 136,399 | 150,367 |  |
Average balance | 135,982 | 136,404 | 127,421 |
Interest income recognized | 4,466 | 4,675 | 5,427 |
Allowance for loan and lease losses | 205,026 | 189,904 | 182,837 | 179,874
Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 1,880 | 863 |  |
ALLL for loans and leases individually evaluated for impairment | 152 | 289 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,279 | 305 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 284 | 122 |  |
Financing Receivable, Individually Evaluated for Impairment | 1,563 | 427 |  |
Average balance | 1,112 | 481 | 2,125 |
Interest income recognized | 38 | 12 | 80 |
Allowance for loan and lease losses | 3,269 | 2,168 | 732 | 1,009
Non-PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 1,172 | 4,428 |  |
ALLL for loans and leases individually evaluated for impairment | 151 | 123 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,002 | 1,623 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 43 | 1,471 |  |
Financing Receivable, Individually Evaluated for Impairment | 1,045 | 3,094 |  |
Average balance | 2,700 | 3,164 | 1,689 |
Interest income recognized | 138 | 146 | 83 |
Allowance for loan and lease losses | 28,877 | 16,288 | 11,961 | 10,335
Non-PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 82,658 | 103,763 |  |
ALLL for loans and leases individually evaluated for impairment | 3,488 | 3,370 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 42,875 | 41,793 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 33,486 | 53,314 |  |
Financing Receivable, Individually Evaluated for Impairment | 76,361 | 95,107 |  |
Average balance | 82,146 | 89,934 | 86,250 |
Interest income recognized | 2,671 | 3,129 | 3,698 |
Allowance for loan and lease losses | 48,278 | 69,896 | 85,189 | 100,257
Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 16,637 | 21,455 |  |
ALLL for loans and leases individually evaluated for impairment | 1,732 | 1,118 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 8,920 | 8,544 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 3,680 | 9,366 |  |
Financing Receivable, Individually Evaluated for Impairment | 12,600 | 17,910 |  |
Average balance | 11,878 | 14,587 | 13,433 |
Interest income recognized | 417 | 510 | 580 |
Allowance for loan and lease losses | 50,225 | 43,116 | 30,727 | 22,362
Non-PCI Loans | Commercial | Lease financing |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 1,074 | 1,956 |  |
ALLL for loans and leases individually evaluated for impairment | 75 | 213 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,002 | 1,651 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 72 | 104 |  |
Financing Receivable, Individually Evaluated for Impairment | 1,074 | 1,755 |  |
Average balance | 1,307 | 1,718 | 774 |
Interest income recognized | 63 | 74 | 44 |
Allowance for loan and lease losses | 5,907 | 5,524 | 4,286 | 4,749
Non-PCI Loans | Commercial | Other |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 233 | 1,260 |  |
ALLL for loans and leases individually evaluated for impairment | 23 | 0 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 142 | 0 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 0 | 1,183 |  |
Financing Receivable, Individually Evaluated for Impairment | 142 | 1,183 |  |
Average balance | 687 | 1,673 | 528 |
Interest income recognized | 33 | 37 | 29 |
Allowance for loan and lease losses | 3,127 | 1,855 | 3,184 | 190
Non-PCI Loans | Noncommercial | Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 3,030 | 784 |  |
ALLL for loans and leases individually evaluated for impairment | 109 | 49 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 645 | 693 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,968 | 91 |  |
Financing Receivable, Individually Evaluated for Impairment | 2,613 | 784 |  |
Average balance | 983 | 829 | 1,678 |
Interest income recognized | 50 | 38 | 98 |
Allowance for loan and lease losses | 1,596 | 1,485 | 892 | 681
Non-PCI Loans | Noncommercial | Mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 32,588 | 25,043 |  |
ALLL for loans and leases individually evaluated for impairment | 2,447 | 1,212 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 20,269 | 10,097 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 11,207 | 12,889 |  |
Financing Receivable, Individually Evaluated for Impairment | 31,476 | 22,986 |  |
Average balance | 26,774 | 18,524 | 15,487 |
Interest income recognized | 805 | 557 | 593 |
Allowance for loan and lease losses | 23,094 | 14,105 | 10,661 | 10,511
Non-PCI Loans | Noncommercial | Revolving mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 8,831 | 7,120 |  |
ALLL for loans and leases individually evaluated for impairment | 366 | 299 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,825 | 1,105 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 5,788 | 4,778 |  |
Financing Receivable, Individually Evaluated for Impairment | 7,613 | 5,883 |  |
Average balance | 6,915 | 4,368 | 3,922 |
Interest income recognized | 171 | 97 | 134 |
Allowance for loan and lease losses | 12,366 | 15,971 | 18,650 | 16,239
Non-PCI Loans | Noncommercial | Consumer |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Unpaid principal balance | 2,086 | 1,294 |  |
ALLL for loans and leases individually evaluated for impairment | 667 | 527 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,532 | 1,050 |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 380 | 188 |  |
Financing Receivable, Individually Evaluated for Impairment | 1,912 | 1,238 |  |
Average balance | 1,480 | 1,126 | 1,535 |
Interest income recognized | 80 | 75 | 88 |
Allowance for loan and lease losses | 28,287 | 19,496 | 16,555 | 13,541
PCI Loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Acquired loans which have adverse change in expected cash flows | 359,699 | 469,252 |  |
Allowance for loan and lease losses | 13,769 | 16,312 | 21,629 | 53,520
PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 502 | 773 | 75 | 1,354
PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 483 | 1,082 | 150 | 1,320
PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 6,423 | 7,838 | 10,135 | 29,906
PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 504 | 445 | 1,240 | 5,275
PCI Loans | Noncommercial | Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 0 | 0 | 183 | 682
PCI Loans | Noncommercial | Mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | 4,818 | 5,398 | 5,820 | 11,802
PCI Loans | Noncommercial | Revolving mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan and lease losses | $ 956 | $ 523 | $ 3,999 | $ 2,959

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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)(1) -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 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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