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Loans (Tables) | 3 Months Ended
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Mar. 31, 2014
Receivables [Abstract] |
Loans | Loans were as follows:
| March 31, 2014 |  | Percentage of Total |  | December 31, 2013 |  | Percentage of Total
Commercial and industrial: |  |  |  |  |  |  |
Commercial | $ | 4,686,817 |  |  | 48.1 | % |  | $ | 4,460,543 |  |  | 46.9 | %
Leases | 307,269 |  |  | 3.1 |  |  | 319,577 |  |  | 3.4 |
Asset-based | 112,640 |  |  | 1.2 |  |  | 126,956 |  |  | 1.3 |
Total commercial and industrial | 5,106,726 |  |  | 52.4 |  |  | 4,907,076 |  |  | 51.6 |
Commercial real estate: |  |  |  |  |  |  |
Commercial mortgages | 2,800,091 |  |  | 28.7 |  |  | 2,800,760 |  |  | 29.4 |
Construction | 445,491 |  |  | 4.6 |  |  | 426,639 |  |  | 4.5 |
Land | 250,557 |  |  | 2.6 |  |  | 239,937 |  |  | 2.5 |
Total commercial real estate | 3,496,139 |  |  | 35.9 |  |  | 3,467,336 |  |  | 36.4 |
Consumer real estate: |  |  |  |  |  |  |
Home equity loans | 334,802 |  |  | 3.4 |  |  | 329,853 |  |  | 3.5 |
Home equity lines of credit | 199,734 |  |  | 2.0 |  |  | 195,132 |  |  | 2.1 |
1-4 family residential mortgages | 29,749 |  |  | 0.3 |  |  | 32,447 |  |  | 0.3 |
Construction | 15,509 |  |  | 0.2 |  |  | 13,123 |  |  | 0.1 |
Other | 239,203 |  |  | 2.5 |  |  | 237,649 |  |  | 2.5 |
Total consumer real estate | 818,997 |  |  | 8.4 |  |  | 808,204 |  |  | 8.5 |
Total real estate | 4,315,136 |  |  | 44.3 |  |  | 4,275,540 |  |  | 44.9 |
Consumer and other: |  |  |  |  |  |  |
Consumer installment | 346,798 |  |  | 3.5 |  |  | 350,827 |  |  | 3.7 |
Other | 5,522 |  |  | 0.1 |  |  | 7,289 |  |  | 0.1 |
Total consumer and other | 352,320 |  |  | 3.6 |  |  | 358,116 |  |  | 3.8 |
Unearned discounts | (23,537 | ) |  | (0.3 | ) |  | (25,032 | ) |  | (0.3 | )
Total loans | $ | 9,750,645 |  |  | 100.0 | % |  | $ | 9,515,700 |  |  | 100.0 | %
Non-Accrual Loans, Segregated by Class of Loans | Non-accrual loans, segregated by class of loans, were as follows:
| March 31, 2014 |  | December 31, 2013
Commercial and industrial: |  |  |
Energy | $ | 526 |  |  | $ | 590 |
Other commercial | 22,458 |  |  | 26,143 |
Commercial real estate: |  |  |
Buildings, land and other | 23,319 |  |  | 27,035 |
Construction | 312 |  |  | — |
Consumer real estate | 2,178 |  |  | 2,207 |
Consumer and other | 710 |  |  | 745 |
Total | $ | 49,503 |  |  | $ | 56,720 |
Age Analysis of Past Due Loans, Segregated by Class of Loans | An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of March 31, 2014 was as follows:
| Loans 30-89 Days Past Due |  | Loans 90 or More Days Past Due |  | Total Past Due Loans |  | Current Loans |  | Total Loans |  | Accruing Loans 90 or More Days Past Due
Commercial and industrial: |  |  |  |  |  |  |  |  |  |  |
Energy | $ | 1 |  |  | $ | 526 |  |  | $ | 527 |  |  | $ | 1,151,792 |  |  | $ | 1,152,319 |  |  | $ | — |
Other commercial | 10,078 |  |  | 12,602 |  |  | 22,680 |  |  | 3,931,727 |  |  | 3,954,407 |  |  | 4,419 |
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
Buildings, land and other | 9,814 |  |  | 15,287 |  |  | 25,101 |  |  | 3,025,547 |  |  | 3,050,648 |  |  | 1,622 |
Construction | 411 |  |  | — |  |  | 411 |  |  | 445,080 |  |  | 445,491 |  |  | — |
Consumer real estate | 5,876 |  |  | 2,332 |  |  | 8,208 |  |  | 810,789 |  |  | 818,997 |  |  | 2,105 |
Consumer and other | 2,539 |  |  | 1,053 |  |  | 3,592 |  |  | 348,728 |  |  | 352,320 |  |  | 893 |
Unearned discounts | — |  |  | — |  |  | — |  |  | (23,537 | ) |  | (23,537 | ) |  | — |
Total | $ | 28,719 |  |  | $ | 31,800 |  |  | $ | 60,519 |  |  | $ | 9,690,126 |  |  | $ | 9,750,645 |  |  | $ | 9,039 |
Impaired Loans | Impaired loans are set forth in the following table. No interest income was recognized on impaired loans subsequent to their classification as impaired.
| Unpaid Contractual Principal Balance |  | Recorded Investment With No Allowance |  | Recorded Investment With Allowance |  | Total Recorded Investment |  | Related Allowance
March 31, 2014 |  |  |  |  |  |  |  |  |
Commercial and industrial: |  |  |  |  |  |  |  |  |
Energy | $ | 545 |  |  | $ | 526 |  |  | $ | — |  |  | $ | 526 |  |  | $ | — |
Other commercial | 28,100 |  |  | 15,663 |  |  | 3,728 |  |  | 19,391 |  |  | 2,731 |
Commercial real estate: |  |  |  |  |  |  |  |  |
Buildings, land and other | 25,842 |  |  | 20,015 |  |  | 1,013 |  |  | 21,028 |  |  | 776 |
Construction | 481 |  |  | 312 |  |  | — |  |  | 312 |  |  | — |
Consumer real estate | 894 |  |  | 718 |  |  | — |  |  | 718 |  |  | — |
Consumer and other | 310 |  |  | 264 |  |  | — |  |  | 264 |  |  | — |
Total | $ | 56,172 |  |  | $ | 37,498 |  |  | $ | 4,741 |  |  | $ | 42,239 |  |  | $ | 3,507 |
December 31, 2013 |  |  |  |  |  |  |  |  |
Commercial and industrial: |  |  |  |  |  |  |  |  |
Energy | $ | 545 |  |  | $ | 531 |  |  | $ | — |  |  | $ | 531 |  |  | $ | — |
Other commercial | 31,429 |  |  | 15,337 |  |  | 7,004 |  |  | 22,341 |  |  | 4,140 |
Commercial real estate: |  |  |  |  |  |  |  |  |
Buildings, land and other | 27,792 |  |  | 15,697 |  |  | 8,870 |  |  | 24,567 |  |  | 2,786 |
Construction | — |  |  | — |  |  | — |  |  | — |  |  | — |
Consumer real estate | 907 |  |  | 745 |  |  | — |  |  | 745 |  |  | — |
Consumer and other | 334 |  |  | 278 |  |  | — |  |  | 278 |  |  | — |
Total | $ | 61,007 |  |  | $ | 32,588 |  |  | $ | 15,874 |  |  | $ | 48,462 |  |  | $ | 6,926 |
Average Recorded Investment In Impaired Loans | The average recorded investment in impaired loans was as follows:
| Three Months Ended March 31,
| 2014 |  | 2013
Commercial and industrial: |  |  |
Energy | $ | 529 |  |  | $ | 535 |
Other commercial | 20,866 |  |  | 42,452 |
Commercial real estate: |  |  |
Buildings, land and other | 22,798 |  |  | 36,338 |
Construction | 156 |  |  | 1,078 |
Consumer real estate | 732 |  |  | 849 |
Consumer and other | 271 |  |  | 392 |
Total | $ | 45,352 |  |  | $ | 81,644 |
Troubled Debt Restructurings | Troubled debt restructurings during the three months ended March 31, 2014 and March 31, 2013 are set forth in the following table.
| Three Months Ended March 31, 2014 |  | Three Months Ended March 31, 2013
| Balance at Restructure |  | Balance at Period-End |  | Balance at Restructure |  | Balance at Period-End
Commercial and industrial: |  |  |  |  |  |  |
Energy | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Other commercial | 819 |  |  | 793 |  |  | 275 |  |  | 275 |
Commercial real estate: |  |  |  |  |  |  |
Buildings, land and other | — |  |  | — |  |  | 1,680 |  |  | 1,613 |
| $ | 819 |  |  | $ | 793 |  |  | $ | 1,955 |  |  | $ | 1,888 |
Weighted Average Risk Grades for All Commercial Loans by Class | The following table presents weighted average risk grades for all commercial loans by class.
| March 31, 2014 |  | December 31, 2013
| Weighted Average Risk Grade |  | Loans |  | Weighted Average Risk Grade |  | Loans
Commercial and industrial: |  |  |  |  |  |  |
Energy |  |  |  |  |  |  |
Risk grades 1-8 | 5.36 |  |  | $ | 1,129,839 |  |  | 5.37 |  |  | $ | 1,106,348 |
Risk grade 9 | 9.00 |  |  | 21,733 |  |  | 9.00 |  |  | 7,726 |
Risk grade 10 | 10.00 |  |  | 221 |  |  | 10.00 |  |  | 245 |
Risk grade 11 | 11.00 |  |  | — |  |  | 11.00 |  |  | 500 |
Risk grade 12 | 12.00 |  |  | 526 |  |  | 12.00 |  |  | 590 |
Risk grade 13 | 13.00 |  |  | — |  |  | 13.00 |  |  | — |
Total energy | 5.43 |  |  | $ | 1,152,319 |  |  | 5.40 |  |  | $ | 1,115,409 |
Other commercial |  |  |  |  |  |  |
Risk grades 1-8 | 5.98 |  |  | $ | 3,671,876 |  |  | 5.95 |  |  | $ | 3,507,963 |
Risk grade 9 | 9.00 |  |  | 76,294 |  |  | 9.00 |  |  | 74,766 |
Risk grade 10 | 10.00 |  |  | 87,148 |  |  | 10.00 |  |  | 89,878 |
Risk grade 11 | 11.00 |  |  | 96,581 |  |  | 11.00 |  |  | 92,917 |
Risk grade 12 | 12.00 |  |  | 19,253 |  |  | 12.00 |  |  | 21,389 |
Risk grade 13 | 13.00 |  |  | 3,255 |  |  | 13.00 |  |  | 4,754 |
Total other commercial | 6.28 |  |  | $ | 3,954,407 |  |  | 6.27 |  |  | $ | 3,791,667 |
Commercial real estate: |  |  |  |  |  |  |
Buildings, land and other |  |  |  |  |  |  |
Risk grades 1-8 | 6.59 |  |  | $ | 2,840,771 |  |  | 6.59 |  |  | $ | 2,844,665 |
Risk grade 9 | 9.00 |  |  | 88,408 |  |  | 9.00 |  |  | 65,770 |
Risk grade 10 | 10.00 |  |  | 47,465 |  |  | 10.00 |  |  | 49,881 |
Risk grade 11 | 11.00 |  |  | 50,454 |  |  | 11.00 |  |  | 53,208 |
Risk grade 12 | 12.00 |  |  | 22,774 |  |  | 12.00 |  |  | 24,387 |
Risk grade 13 | 13.00 |  |  | 776 |  |  | 13.00 |  |  | 2,786 |
Total commercial real estate | 6.83 |  |  | $ | 3,050,648 |  |  | 6.83 |  |  | $ | 3,040,697 |
Construction |  |  |  |  |  |  |
Risk grades 1-8 | 7.05 |  |  | $ | 441,923 |  |  | 7.05 |  |  | $ | 418,999 |
Risk grade 9 | 9.00 |  |  | 1,682 |  |  | 9.00 |  |  | 1,301 |
Risk grade 10 | 10.00 |  |  | 1,353 |  |  | 10.00 |  |  | 5,931 |
Risk grade 11 | 11.00 |  |  | 221 |  |  | 11.00 |  |  | 408 |
Risk grade 12 | 12.00 |  |  | 312 |  |  | 12.00 |  |  | — |
Risk grade 13 | 13.00 |  |  | — |  |  | 13.00 |  |  | — |
Total construction | 7.07 |  |  | $ | 445,491 |  |  | 7.10 |  |  | $ | 426,639 |
Net (Charge-Offs)/Recoveries, Segregated by Class of Loans | Net (charge-offs)/recoveries, segregated by class of loans, were as follows:
| Three Months Ended March 31,
| 2014 |  | 2013
Commercial and industrial: |  |  |
Energy | $ | (13 | ) |  | $ | — |
Other commercial | (1,683 | ) |  | (16,527 | )
Commercial real estate: |  |  |
Buildings, land and other | (1,618 | ) |  | 215 |
Construction | 40 |  |  | 114 |
Consumer real estate | 23 |  |  | (276 | )
Consumer and other | (631 | ) |  | (390 | )
Total | $ | (3,882 | ) |  | $ | (16,864 | )
Unallocated Portion of Allowance for Loan Losses | The following table presents details of the allowance for loan losses, segregated by loan portfolio segment.
| Commercial and Industrial |  | Commercial Real Estate |  | Consumer Real Estate |  | Consumer and Other |  | Unallocated |  | Total
March 31, 2014 |  |  |  |  |  |  |  |  |  |  |
Historical valuation allowances | $ | 36,638 |  |  | $ | 13,121 |  |  | $ | 1,966 |  |  | $ | 9,364 |  |  | $ | — |  |  | $ | 61,089 |
Specific valuation allowances | 2,731 |  |  | 776 |  |  | — |  |  | — |  |  | — |  |  | 3,507 |
General valuation allowances: |  |  |  |  |  |  |  |  |  |  |
Environmental risk adjustment | 7,189 |  |  | 3,223 |  |  | 465 |  |  | 2,420 |  |  | — |  |  | 13,297 |
Distressed industries | 2,354 |  |  | 96 |  |  | — |  |  | — |  |  | — |  |  | 2,450 |
Excessive industry concentrations | 1,894 |  |  | 327 |  |  | — |  |  | — |  |  | — |  |  | 2,221 |
Large relationship concentrations | 1,662 |  |  | 1,135 |  |  | — |  |  | — |  |  | — |  |  | 2,797 |
Highly-leveraged credit relationships | 5,170 |  |  | 957 |  |  | — |  |  | — |  |  | — |  |  | 6,127 |
Policy exceptions | — |  |  | — |  |  | — |  |  | — |  |  | 2,547 |  |  | 2,547 |
Credit and collateral exceptions | — |  |  | — |  |  | — |  |  | — |  |  | 1,954 |  |  | 1,954 |
Loans not reviewed by concurrence | 2,008 |  |  | 2,176 |  |  | 2,280 |  |  | 1,056 |  |  | — |  |  | 7,520 |
Adjustment for recoveries | (2,592 | ) |  | (791 | ) |  | (178 | ) |  | (7,149 | ) |  | — |  |  | (10,710 | )
General macroeconomic risk | — |  |  | — |  |  | — |  |  | — |  |  | 2,357 |  |  | 2,357 |
Total | $ | 57,054 |  |  | $ | 21,020 |  |  | $ | 4,533 |  |  | $ | 5,691 |  |  | $ | 6,858 |  |  | $ | 95,156 |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Historical valuation allowances | $ | 29,357 |  |  | $ | 13,042 |  |  | $ | 2,644 |  |  | $ | 8,695 |  |  | $ | — |  |  | $ | 53,738 |
Specific valuation allowances | 4,140 |  |  | 2,786 |  |  | — |  |  | — |  |  | — |  |  | 6,926 |
General valuation allowances: |  |  |  |  |  |  |  |  |  |  |
Environmental risk adjustment | 5,497 |  |  | 3,314 |  |  | 664 |  |  | 2,331 |  |  | — |  |  | 11,806 |
Distressed industries | 7,812 |  |  | 384 |  |  | — |  |  | — |  |  | — |  |  | 8,196 |
Excessive industry concentrations | 1,499 |  |  | 367 |  |  | — |  |  | — |  |  | — |  |  | 1,866 |
Large relationship concentrations | 1,529 |  |  | 1,081 |  |  | — |  |  | — |  |  | — |  |  | 2,610 |
Highly-leveraged credit relationships | 4,535 |  |  | 619 |  |  | — |  |  | — |  |  | — |  |  | 5,154 |
Policy exceptions | — |  |  | — |  |  | — |  |  | — |  |  | 2,492 |  |  | 2,492 |
Credit and collateral exceptions | — |  |  | — |  |  | — |  |  | — |  |  | 1,398 |  |  | 1,398 |
Loans not reviewed by concurrence | 2,009 |  |  | 2,201 |  |  | 2,250 |  |  | 1,064 |  |  | — |  |  | 7,524 |
Adjustment for recoveries | (3,588 | ) |  | (1,204 | ) |  | (328 | ) |  | (7,080 | ) |  | — |  |  | (12,200 | )
General macroeconomic risk | — |  |  | — |  |  | — |  |  | — |  |  | 2,928 |  |  | 2,928 |
Total | $ | 52,790 |  |  | $ | 22,590 |  |  | $ | 5,230 |  |  | $ | 5,010 |  |  | $ | 6,818 |  |  | $ | 92,438 |
Activity in Allowance for Loan Losses by Portfolio Segment | The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2014 and 2013. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.
| Commercial and Industrial |  | Commercial Real Estate |  | Consumer Real Estate |  | Consumer and Other |  | Unallocated |  | Total
Three months ended: |  |  |  |  |  |  |  |  |  |  |
March 31, 2014 |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 52,790 |  |  | $ | 22,590 |  |  | $ | 5,230 |  |  | $ | 5,010 |  |  | $ | 6,818 |  |  | $ | 92,438 |
Provision for loan losses | 5,960 |  |  | 8 |  |  | (720 | ) |  | 1,312 |  |  | 40 |  |  | 6,600 |
Charge-offs | (2,367 | ) |  | (1,791 | ) |  | (21 | ) |  | (2,487 | ) |  | — |  |  | (6,666 | )
Recoveries | 671 |  |  | 213 |  |  | 44 |  |  | 1,856 |  |  | — |  |  | 2,784 |
Net charge-offs | (1,696 | ) |  | (1,578 | ) |  | 23 |  |  | (631 | ) |  | — |  |  | (3,882 | )
Ending balance | $ | 57,054 |  |  | $ | 21,020 |  |  | $ | 4,533 |  |  | $ | 5,691 |  |  | $ | 6,858 |  |  | $ | 95,156 |
March 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 54,164 |  |  | $ | 29,346 |  |  | $ | 5,252 |  |  | $ | 3,507 |  |  | $ | 12,184 |  |  | $ | 104,453 |
Provision for loan losses | 13,448 |  |  | (4,866 | ) |  | 172 |  |  | 607 |  |  | (3,361 | ) |  | 6,000 |
Charge-offs | (17,152 | ) |  | (266 | ) |  | (336 | ) |  | (2,177 | ) |  | — |  |  | (19,931 | )
Recoveries | 625 |  |  | 595 |  |  | 60 |  |  | 1,787 |  |  | — |  |  | 3,067 |
Net charge-offs | (16,527 | ) |  | 329 |  |  | (276 | ) |  | (390 | ) |  | — |  |  | (16,864 | )
Ending balance | $ | 51,085 |  |  | $ | 24,809 |  |  | $ | 5,148 |  |  | $ | 3,724 |  |  | $ | 8,823 |  |  | $ | 93,589 |
Allowance for Loan Losses Disaggregated on the Basis of Impairment Methodology | The following table details the amount of the allowance for loan losses allocated to each portfolio segment as of March 31, 2014, December 31, 2013 and March 31, 2013, detailed on the basis of the impairment methodology used by the Corporation.
| Commercial and Industrial |  | Commercial Real Estate |  | Consumer Real Estate |  | Consumer and Other |  | Unallocated |  | Total
March 31, 2014 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 19,838 |  |  | $ | 1,820 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 21,658 |
Loans collectively evaluated for impairment | 37,216 |  |  | 19,200 |  |  | 4,533 |  |  | 5,691 |  |  | 6,858 |  |  | 73,498 |
Balance at March 31, 2014 | $ | 57,054 |  |  | $ | 21,020 |  |  | $ | 4,533 |  |  | $ | 5,691 |  |  | $ | 6,858 |  |  | $ | 95,156 |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 16,682 |  |  | $ | 3,914 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 20,596 |
Loans collectively evaluated for impairment | 36,108 |  |  | 18,676 |  |  | 5,230 |  |  | 5,010 |  |  | 6,818 |  |  | 71,842 |
Balance at December 31, 2013 | $ | 52,790 |  |  | $ | 22,590 |  |  | $ | 5,230 |  |  | $ | 5,010 |  |  | $ | 6,818 |  |  | $ | 92,438 |
March 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 13,464 |  |  | $ | 4,576 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 18,040 |
Loans collectively evaluated for impairment | 37,621 |  |  | 20,233 |  |  | 5,148 |  |  | 3,724 |  |  | 8,823 |  |  | 75,549 |
Balance at March 31, 2013 | $ | 51,085 |  |  | $ | 24,809 |  |  | $ | 5,148 |  |  | $ | 3,724 |  |  | $ | 8,823 |  |  | $ | 93,589 |
Investment in Loans Related to Allowance for Loan Losses by Portfolio Segment Disaggregated Based on Impairment Methodology | The Corporation’s recorded investment in loans as of March 31, 2014, December 31, 2013 and March 31, 2013 related to each balance in the allowance for loan losses by portfolio segment and detailed on the basis of the impairment methodology used by the Corporation was as follows:
| Commercial and Industrial |  | Commercial Real Estate |  | Consumer Real Estate |  | Consumer and Other |  | Unearned Discounts |  | Total
March 31, 2014 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 206,984 |  |  | $ | 123,355 |  |  | $ | 718 |  |  | $ | 264 |  |  | $ | — |  |  | $ | 331,321 |
Loans collectively evaluated for impairment | 4,899,742 |  |  | 3,372,784 |  |  | 818,279 |  |  | 352,056 |  |  | (23,537 | ) |  | 9,419,324 |
Ending balance | $ | 5,106,726 |  |  | $ | 3,496,139 |  |  | $ | 818,997 |  |  | $ | 352,320 |  |  | $ | (23,537 | ) |  | $ | 9,750,645 |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 210,273 |  |  | $ | 136,601 |  |  | $ | 745 |  |  | $ | 278 |  |  | $ | — |  |  | $ | 347,897 |
Loans collectively evaluated for impairment | 4,696,803 |  |  | 3,330,735 |  |  | 807,459 |  |  | 357,838 |  |  | (25,032 | ) |  | 9,167,803 |
Ending balance | $ | 4,907,076 |  |  | $ | 3,467,336 |  |  | $ | 808,204 |  |  | $ | 358,116 |  |  | $ | (25,032 | ) |  | $ | 9,515,700 |
March 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment | $ | 148,858 |  |  | $ | 158,651 |  |  | $ | 834 |  |  | $ | 384 |  |  | $ | — |  |  | $ | 308,727 |
Loans collectively evaluated for impairment | 4,559,807 |  |  | 3,232,858 |  |  | 770,822 |  |  | 310,964 |  |  | (20,827 | ) |  | 8,853,624 |
Ending balance | $ | 4,708,665 |  |  | $ | 3,391,509 |  |  | $ | 771,656 |  |  | $ | 311,348 |  |  | $ | (20,827 | ) |  | $ | 9,162,351 |

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- Definition Allowance for Loan Losses Disaggregated on the Basis of Impairment Methodology [Table Text Block] + References No definition available. + Details
Name: | cfr_AllowanceForLoanLossesDisaggregatedOnBasisOfImpairmentMethodologyTableTableTextBlock
Namespace Prefix: | cfr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Impaired Financing Receivable Average Recorded Investment Table [Text Block] + References No definition available. + Details
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- Definition Investment In Loans Related To The Allowance For Loan Losses By Portfolio Segment Disaggregated Based On Impairment Methodology + References No definition available. + Details
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- Definition Net (Charge-Offs)/Recoveries, Segregated By Class of Loans [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953659-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525 + Details
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- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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- Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 + Details
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- Definition Tabular disclosure of nonaccrual and past due financing receivables (such as loans and trade receivables), including: (a) the recorded investment in loans and trade receivables, if applicable, on nonaccrual status as of each balance sheet date (b) the recorded investment in loans and trade receivables, if applicable, past due 90 days or more and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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- Definition Tabular disclosure of financing receivables and troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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