XML 51 R37.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 5 - Loans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | As of December 31, |
|  | 2018 |  |  | 2017 |
|  | (In thousands) |
Type of Loans: |  |  |  |  |  |  |  |
Commercial loans |  | $ | 2,741,965 |  |  | $ | 2,461,266 |
Real estate construction loans |  |  | 581,454 |  |  |  | 678,805 |
Commercial mortgage loans |  |  | 6,724,200 |  |  |  | 6,482,695 |
Residential mortgage loans |  |  | 3,693,853 |  |  |  | 3,062,050 |
Equity lines |  |  | 249,967 |  |  |  | 180,304 |
Installment and other loans |  |  | 4,349 |  |  |  | 5,170 |
Gross loans |  |  | 13,995,788 |  |  |  | 12,870,290 |
Less: |  |  |  |  |  |  |  |
Allowance for loan losses |  |  | (122,391 | ) |  |  | (123,279 | )
Unamortized deferred loan fees |  |  | (1,565 | ) |  |  | (3,245 | )
Total loans and leases, net |  | $ | 13,871,832 |  |  | $ | 12,743,766 |
Loans held for sale |  | $ | - |  |  | $ | 8,000 |
Schedule of Related Party Transactions [Table Text Block] |
|  | December 31, |
|  | 2018 |  |  | 2017 |
|  | (In thousands) |
Balance at beginning of year |  | $ | 66,593 |  |  | $ | 51,327 |
Additional loans made |  |  | 18,580 |  |  |  | 53,584 |
Payment received |  |  | (37,910 | ) |  |  | (38,318 | )
Balance at end of year |  | $ | 47,263 |  |  | $ | 66,593 |
Schedule Of Impaired Loans And Related Allowance And Charge Off [Table Text Block] |
|  | Impaired Loans |
|  | As of December 31, 2018 |  |  | As of December 31, 2017 |
|  | Unpaid Principal Balance |  |  | Recorded Investment |  |  | Allowance |  |  | Unpaid Principal Balance |  |  | Recorded Investment |  |  | Allowance |
|  | (In thousands) |
With no allocated allowance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial loans |  | $ | 32,015 |  |  | $ | 30,368 |  |  | $ | - |  |  | $ | 43,483 |  |  | $ | 42,702 |  |  | $ | - |
Real estate construction loans |  |  | 5,776 |  |  |  | 4,873 |  |  |  | - |  |  |  | 8,821 |  |  |  | 8,185 |  |  |  | - |
Commercial mortgage loans |  |  | 34,129 |  |  |  | 24,409 |  |  |  | - |  |  |  | 37,825 |  |  |  | 31,029 |  |  |  | - |
Residential mortgage and equity lines |  |  | 5,685 |  |  |  | 5,665 |  |  |  | - |  |  |  | 1,301 |  |  |  | 1,301 |  |  |  | - |
Subtotal |  | $ | 77,605 |  |  | $ | 65,315 |  |  | $ | - |  |  | $ | 91,430 |  |  | $ | 83,217 |  |  | $ | - |
With allocated allowance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial loans |  | $ | 6,653 |  |  | $ | 6,570 |  |  | $ | 1,837 |  |  | $ | 891 |  |  | $ | 793 |  |  | $ | 43 |
Commercial mortgage loans |  |  | 27,099 |  |  |  | 27,063 |  |  |  | 877 |  |  |  | 21,733 |  |  |  | 21,635 |  |  |  | 1,738 |
Residential mortgage and equity lines |  |  | 8,934 |  |  |  | 7,938 |  |  |  | 1,088 |  |  |  | 13,022 |  |  |  | 11,708 |  |  |  | 353 |
Subtotal |  | $ | 42,686 |  |  | $ | 41,571 |  |  | $ | 3,802 |  |  | $ | 35,646 |  |  | $ | 34,136 |  |  | $ | 2,134 |
Total impaired loans |  | $ | 120,291 |  |  | $ | 106,886 |  |  | $ | 3,802 |  |  | $ | 127,076 |  |  | $ | 117,353 |  |  | $ | 2,134 |
Impaired Financing Receivables [Table Text Block] |
|  | For the year ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
|  | Average Recorded Investment |  |  | Interest Income Recognized |
|  | (In thousands) |
Commercial loans |  | $ | 44,486 |  |  | $ | 26,957 |  |  | $ | 21,199 |  |  | $ | 685 |  |  | $ | 1,303 |  |  | $ | 767 |
Real estate construction loans |  |  | 6,835 |  |  |  | 26,695 |  |  |  | 10,362 |  |  |  | - |  |  |  | - |  |  |  | - |
Commercial mortgage loans |  |  | 57,596 |  |  |  | 58,635 |  |  |  | 81,905 |  |  |  | 2,125 |  |  |  | 1,618 |  |  |  | 2,214 |
Residential mortgage and equity lines |  |  | 13,679 |  |  |  | 14,780 |  |  |  | 17,553 |  |  |  | 356 |  |  |  | 381 |  |  |  | 481 |
Subtotal |  | $ | 122,596 |  |  | $ | 127,067 |  |  | $ | 131,019 |  |  | $ | 3,166 |  |  | $ | 3,302 |  |  | $ | 3,462 |
Schedule of Financing Receivables, Non Accrual Status [Table Text Block] |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (In thousands) |
Non-accrual portfolio loans |  | $ | 41,815 |  |  | $ | 48,787 |  |  | $ | 49,682 |
Non-accrual loans held-for-sale |  |  | - |  |  |  | 8,000 |  |  |  | 7,500 |
Total non-accrual loans |  | $ | 41,815 |  |  | $ | 56,787 |  |  | $ | 57,182 |
Contractual interest due |  | $ | 1,618 |  |  | $ | 3,254 |  |  | $ | 1,573 |
Interest recognized |  |  | 66 |  |  |  | 86 |  |  |  | 95 |
Net interest foregone |  | $ | 1,552 |  |  | $ | 3,168 |  |  | $ | 1,478 |
Past Due Financing Receivables [Table Text Block] |
|  | As of December 31, 2018 |
|  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | 90 Days or More Past Due |  |  | Non-accrual Loans |  |  | Total Past Due |  |  | Loans Not Past Due |  |  | Total |
Type of Loans: |  | (In thousands) |
Commercial loans |  | $ | 25,494 |  |  | $ | 2,454 |  |  | $ | 514 |  |  | $ | 18,805 |  |  | $ | 47,267 |  |  | $ | 2,694,698 |  |  | $ | 2,741,965 |
Real estate construction loans |  |  | - |  |  |  | 3,156 |  |  |  | - |  |  |  | 4,872 |  |  |  | 8,028 |  |  |  | 573,426 |  |  |  | 581,454 |
Commercial mortgage loans |  |  | 10,797 |  |  |  | 8,545 |  |  |  | 3,259 |  |  |  | 10,611 |  |  |  | 33,212 |  |  |  | 6,690,988 |  |  |  | 6,724,200 |
Residential mortgage loans |  |  | 9,687 |  |  |  | 336 |  |  |  | - |  |  |  | 7,527 |  |  |  | 17,550 |  |  |  | 3,926,270 |  |  |  | 3,943,820 |
Installment and other loans |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,349 |  |  |  | 4,349 |
Total loans |  | $ | 45,978 |  |  | $ | 14,491 |  |  | $ | 3,773 |  |  | $ | 41,815 |  |  | $ | 106,057 |  |  | $ | 13,889,731 |  |  | $ | 13,995,788 |
|  | As of December 31, 2017 |
|  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | 90 Days or More Past Due |  |  | Non-accrual Loans |  |  | Total Past Due |  |  | Loans Not Past Due |  |  | Total |
Type of Loans: |  | (In thousands) |
Commercial loans |  | $ | 11,079 |  |  | $ | 5,192 |  |  | $ | - |  |  | $ | 14,296 |  |  | $ | 30,567 |  |  | $ | 2,430,699 |  |  | $ | 2,461,266 |
Real estate construction loans |  |  | 3,028 |  |  |  | - |  |  |  | - |  |  |  | 8,185 |  |  |  | 11,213 |  |  |  | 667,592 |  |  |  | 678,805 |
Commercial mortgage loans |  |  | 17,573 |  |  |  | 5,602 |  |  |  | - |  |  |  | 19,820 |  |  |  | 42,995 |  |  |  | 6,439,700 |  |  |  | 6,482,695 |
Residential mortgage loans |  |  | 6,613 |  |  |  | 732 |  |  |  | - |  |  |  | 6,486 |  |  |  | 13,831 |  |  |  | 3,228,523 |  |  |  | 3,242,354 |
Installment and other loans |  |  | 103 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 103 |  |  |  | 5,067 |  |  |  | 5,170 |
Total loans |  | $ | 38,396 |  |  | $ | 11,526 |  |  | $ | - |  |  | $ | 48,787 |  |  | $ | 98,709 |  |  | $ | 12,771,581 |  |  | $ | 12,870,290 |
Schedule Of Troubled Debt Restructurings [Table Text Block] |
|  | No. of Contracts |  |  | Pre-Modification Outstanding Recorded Investment |  |  | Post-Modification Outstanding Recorded Investment |  |  | Specific Reserve |  |  | Charge-offs |
|  | (Dollars in thousands) |
Commercial loans |  |  | 23 |  |  | $ | 13,290 |  |  | $ | 13,290 |  |  | $ | 1,384 |  |  | $ | - |
Commercial mortgage loans |  |  | 7 |  |  |  | 14,626 |  |  |  | 14,626 |  |  |  | 111 |  |  |  | - |
Residential mortgage and equity lines |  |  | 4 |  |  |  | 1,214 |  |  |  | 1,214 |  |  |  | 23 |  |  |  | - |
Total |  |  | 34 |  |  | $ | 29,130 |  |  | $ | 29,130 |  |  | $ | 1,518 |  |  | $ | - |
|  | No. of Contracts |  |  | Pre-Modification Outstanding Recorded Investment |  |  | Post-Modification Outstanding Recorded Investment |  |  | Specific Reserve |  |  | Charge-offs |
|  | (Dollars in thousands) |
Commercial loans |  |  | 16 |  |  | $ | 29,590 |  |  | $ | 29,590 |  |  | $ | 7 |  |  | $ | - |
Real estate construction loans |  |  | 2 |  |  |  | 27,683 |  |  |  | 27,683 |  |  |  | - |  |  |  | - |
Commercial mortgage loans |  |  | 9 |  |  |  | 19,380 |  |  |  | 19,075 |  |  |  | 1,496 |  |  |  | 305 |
Residential mortgage and equity lines |  |  | 4 |  |  |  | 1,088 |  |  |  | 1,088 |  |  |  | 53 |  |  |  | - |
Total |  |  | 31 |  |  | $ | 77,741 |  |  | $ | 77,436 |  |  | $ | 1,556 |  |  | $ | 305 |
|  | No. of Contracts |  |  | Pre-Modification Outstanding Recorded Investment |  |  | Post-Modification Outstanding Recorded Investment |  |  | Specific Reserve |  |  | Charge-off |
|  | (Dollars in thousands) |
Commercial loans |  |  | 24 |  |  | $ | 30,215 |  |  | $ | 29,385 |  |  | $ | 1,746 |  |  | $ | 830 |
Commercial mortgage loans |  |  | 4 |  |  |  | 4,153 |  |  |  | 4,153 |  |  |  | 34 |  |  |  | - |
Residential mortgage and equity lines |  |  | 2 |  |  |  | 367 |  |  |  | 367 |  |  |  | - |  |  |  | - |
Total |  |  | 30 |  |  | $ | 34,735 |  |  | $ | 33,905 |  |  | $ | 1,780 |  |  | $ | 830 |
Troubled Debt Restructurings on Financing Receivables [Table Text Block] |
|  | December 31, 2018 |
Accruing TDRs |  | Payment Deferral |  |  | Rate Reduction |  |  | Rate Reduction and Payment Deferral |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 18,135 |  |  | $ | - |  |  | $ | - |  |  | $ | 18,135 |
Commercial mortgage loans |  |  | 14,022 |  |  |  | 7,420 |  |  |  | 19,418 |  |  |  | 40,860 |
Residential mortgage loans |  |  | 3,353 |  |  |  | 327 |  |  |  | 2,396 |  |  |  | 6,076 |
Total accruing TDRs |  | $ | 35,510 |  |  | $ | 7,747 |  |  | $ | 21,814 |  |  | $ | 65,071 |
|  | December 31, 2017 |
Accruing TDRs |  | Payment Deferral |  |  | Rate Reduction |  |  | Rate Reduction and Payment Deferral |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 29,199 |  |  | $ | - |  |  | $ | - |  |  | $ | 29,199 |
Commercial mortgage loans |  |  | 11,504 |  |  |  | 5,871 |  |  |  | 15,468 |  |  |  | 32,843 |
Residential mortgage loans |  |  | 3,416 |  |  |  | 335 |  |  |  | 2,772 |  |  |  | 6,523 |
Total accruing TDRs |  | $ | 44,119 |  |  | $ | 6,206 |  |  | $ | 18,240 |  |  | $ | 68,565 |
Non Accrual Troubled Debt Restructurings [Table Text Block] |
|  | December 31, 2018 |
Non-accrual TDRs |  | Payment Deferral |  |  | Rate Reduction |  |  | Rate Reduction and Payment Deferral |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 13,771 |  |  | $ | - |  |  | $ | - |  |  | $ | 13,771 |
Commercial mortgage loans |  |  | 3,682 |  |  |  | - |  |  |  | 4,884 |  |  |  | 8,566 |
Residential mortgage loans |  |  | 1,741 |  |  |  | - |  |  |  | 111 |  |  |  | 1,852 |
Total non-accrual TDRs |  | $ | 19,194 |  |  | $ | - |  |  | $ | 4,995 |  |  | $ | 24,189 |
|  | December 31, 2017 |
Non-accrual TDRs |  | Payment Deferral |  |  | Rate Reduction |  |  | Rate Reduction and Payment Deferral |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 12,944 |  |  | $ | - |  |  | $ | - |  |  | $ | 12,944 |
Commercial mortgage loans |  |  | 6,231 |  |  |  | 1,677 |  |  |  | 11,113 |  |  |  | 19,021 |
Residential mortgage loans |  |  | 1,297 |  |  |  | - |  |  |  | 154 |  |  |  | 1,451 |
Total non-accrual TDRs |  | $ | 20,472 |  |  | $ | 1,677 |  |  | $ | 11,267 |  |  | $ | 33,416 |
Activity Within The Troubled Debt Resturings [Table Text Block] |
Accruing TDRs |  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (In thousands) |
Beginning balance |  | $ | 68,565 |  |  | $ | 65,393 |  |  | $ | 81,680 |
New restructurings |  |  | 26,114 |  |  |  | 73,426 |  |  |  | 26,965 |
Restructured loans restored to accrual status |  |  | 2,896 |  |  |  | - |  |  |  | 10,303 |
Charge-offs |  |  | - |  |  |  | - |  |  |  | (88 | )
Payments |  |  | (30,406 | ) |  |  | (54,095 | ) |  |  | (24,192 | )
Restructured loans placed on non-accrual |  |  | (2,098 | ) |  |  | (13,919 | ) |  |  | (13,984 | )
Expiration of loan concession |  |  | - |  |  |  | (2,240 | ) |  |  | (15,291 | )
Ending balance |  | $ | 65,071 |  |  | $ | 68,565 |  |  | $ | 65,393 |
Non-accrual TDRs |  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (In thousands) |
Beginning balance |  | $ | 33,416 |  |  | $ | 29,722 |  |  | $ | 39,923 |
New restructurings |  |  | 3,015 |  |  |  | 4,009 |  |  |  | 6,940 |
Restructured loans placed on non-accrual |  |  | 2,098 |  |  |  | 13,919 |  |  |  | 13,984 |
Charge-offs |  |  | (2,347 | ) |  |  | (1,650 | ) |  |  | (5,271 | )
Payments |  |  | (9,097 | ) |  |  | (11,341 | ) |  |  | (15,551 | )
Foreclosures |  |  | - |  |  |  | (1,243 | ) |  |  | - |
Restructured loans restored to accrual status |  |  | (2,896 | ) |  |  | - |  |  |  | (10,303 | )
Ending balance |  | $ | 24,189 |  |  | $ | 33,416 |  |  | $ | 29,722 |
Financing Receivable Credit Quality Indicators [Table Text Block] |
|  | As of December 31, 2018 |
|  | Pass/Watch |  |  | Special Mention |  |  | Substandard |  |  | Doubtful |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 2,603,901 |  |  | $ | 87,987 |  |  | $ | 50,077 |  |  | $ | - |  |  | $ | 2,741,965 |
Real estate construction loans |  |  | 514,406 |  |  |  | 62,175 |  |  |  | 4,873 |  |  |  | - |  |  |  | 581,454 |
Commercial mortgage loans |  |  | 6,337,368 |  |  |  | 304,791 |  |  |  | 82,041 |  |  |  | - |  |  |  | 6,724,200 |
Residential mortgage and equity lines |  |  | 3,934,762 |  |  |  | - |  |  |  | 9,058 |  |  |  | - |  |  |  | 3,943,820 |
Installment and other loans |  |  | 4,349 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,349 |
Total gross loans |  | $ | 13,394,786 |  |  | $ | 454,953 |  |  | $ | 146,049 |  |  | $ | - |  |  | $ | 13,995,788 |
Loans held for sale |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
|  | As of December 31, 2017 |
|  | Pass/Watch |  |  | Special Mention |  |  | Substandard |  |  | Doubtful |  |  | Total |
|  | (In thousands) |
Commercial loans |  | $ | 2,281,698 |  |  | $ | 118,056 |  |  | $ | 61,503 |  |  | $ | 9 |  |  | $ | 2,461,266 |
Real estate construction loans |  |  | 616,411 |  |  |  | 54,209 |  |  |  | 8,185 |  |  |  | - |  |  |  | 678,805 |
Commercial mortgage loans |  |  | 6,004,258 |  |  |  | 308,924 |  |  |  | 169,513 |  |  |  | - |  |  |  | 6,482,695 |
Residential mortgage and equity lines |  |  | 3,232,606 |  |  |  | - |  |  |  | 9,748 |  |  |  | - |  |  |  | 3,242,354 |
Installment and other loans |  |  | 5,170 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 5,170 |
Total gross loans |  | $ | 12,140,143 |  |  | $ | 481,189 |  |  | $ | 248,949 |  |  | $ | 9 |  |  | $ | 12,870,290 |
Loans held for sale |  | $ | - |  |  | $ | - |  |  | $ | 8,000 |  |  | $ | - |  |  | $ | 8,000 |
Allowance for Credit Losses on Financing Receivables [Table Text Block] |
|  |  |  |  |  | Real Estate |  |  | Commercial |  |  | Residential |  |  | Installment |  |  |  |  |
|  | Commercial |  |  | Construction |  |  | Mortgage |  |  | Mortgage |  |  | and Other |  |  |  |  |
|  | Loans |  |  | Loans |  |  | Loans |  |  | and Equity Lines |  |  | Loans |  |  | Total |
|  | (In thousands) |
2017 Beginning Balance |  | $ | 49,203 |  |  | $ | 23,268 |  |  | $ | 34,864 |  |  | $ | 11,620 |  |  | $ | 11 |  |  | $ | 118,966 |
Provision/(reversal) for loan losses |  |  | 504 |  |  |  | 1,341 |  |  |  | (3,723 | ) |  |  | (626 | ) |  |  | 4 |  |  |  | (2,500 | )
Charge-offs |  |  | (3,313 | ) |  |  | - |  |  |  | (860 | ) |  |  | - |  |  |  | - |  |  |  | (4,173 | )
Recoveries |  |  | 3,402 |  |  |  | 229 |  |  |  | 7,329 |  |  |  | 19 |  |  |  | 7 |  |  |  | 10,986 |
Net Recoveries |  |  | 89 |  |  |  | 229 |  |  |  | 6,469 |  |  |  | 19 |  |  |  | 7 |  |  |  | 6,813 |
2017 Ending Balance |  | $ | 49,796 |  |  | $ | 24,838 |  |  | $ | 37,610 |  |  | $ | 11,013 |  |  | $ | 22 |  |  | $ | 123,279 |
Reserve for impaired loans |  | $ | 43 |  |  | $ | - |  |  | $ | 1,738 |  |  | $ | 353 |  |  | $ | - |  |  | $ | 2,134 |
Reserve for non-impaired loans |  | $ | 49,753 |  |  | $ | 24,838 |  |  | $ | 35,872 |  |  | $ | 10,660 |  |  | $ | 22 |  |  | $ | 121,145 |
Reserve for off-balance sheet credit commitments |  | $ | 2,919 |  |  | $ | 1,360 |  |  | $ | 114 |  |  | $ | 190 |  |  | $ | 5 |  |  | $ | 4,588 |
2018 Beginning Balance |  | $ | 49,796 |  |  | $ | 24,838 |  |  | $ | 37,610 |  |  | $ | 11,013 |  |  | $ | 22 |  |  | $ | 123,279 |
Provision/(reversal) for loan losses |  |  | 3,936 |  |  |  | (5,389 | ) |  |  | (6,289 | ) |  |  | 3,246 |  |  |  | (4 | ) |  |  | (4,500 | )
Charge-offs |  |  | (629 | ) |  |  | - |  |  |  | (2,348 | ) |  |  | (229 | ) |  |  | - |  |  |  | (3,206 | )
Recoveries |  |  | 1,875 |  |  |  | 177 |  |  |  | 4,514 |  |  |  | 252 |  |  |  | - |  |  |  | 6,818 |
Net Recoveries |  |  | 1,246 |  |  |  | 177 |  |  |  | 2,166 |  |  |  | 23 |  |  |  | - |  |  |  | 3,612 |
2018 Ending Balance |  | $ | 54,978 |  |  | $ | 19,626 |  |  | $ | 33,487 |  |  | $ | 14,282 |  |  | $ | 18 |  |  | $ | 122,391 |
Reserve for impaired loans |  | $ | 1,837 |  |  | $ | - |  |  | $ | 877 |  |  | $ | 1,088 |  |  | $ | - |  |  | $ | 3,802 |
Reserve for non-impaired loans |  | $ | 53,141 |  |  | $ | 19,626 |  |  | $ | 32,610 |  |  | $ | 13,194 |  |  | $ | 18 |  |  | $ | 118,589 |
Reserve for off-balance sheet credit commitments |  | $ | 1,161 |  |  | $ | 745 |  |  | $ | 95 |  |  | $ | 246 |  |  | $ | 3 |  |  | $ | 2,250 |
Schedule of Credit Losses for Financing Receivables, Current [Table Text Block] |
|  | For the year ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Allowance for Loan Losses |  | (In thousands) |
Balance at beginning of year |  | $ | 123,279 |  |  | $ | 118,966 |  |  | $ | 138,963 |
Reversal for credit losses |  |  | (4,500 | ) |  |  | (2,500 | ) |  |  | (15,650 | )
Loans charged off |  |  | (3,206 | ) |  |  | (4,173 | ) |  |  | (18,903 | )
Recoveries of charged off loans |  |  | 6,818 |  |  |  | 10,986 |  |  |  | 14,556 |
Balance at end of year |  | $ | 122,391 |  |  | $ | 123,279 |  |  | $ | 118,966 |
Reserve for Off-balance Sheet Credit Commitments |  |  |  |  |  |  |  |  |
Balance at beginning of year |  | $ | 4,588 |  |  | $ | 3,224 |  |  | $ | 1,494 |
(Reversal)/provision for credit losses and transfers |  |  | (2,338 | ) |  |  | 1,364 |  |  |  | 1,730 |
Balance at end of year |  | $ | 2,250 |  |  | $ | 4,588 |  |  | $ | 3,224 |
Impairment Method [Member] |
Notes Tables |
Impaired Financing Receivables [Table Text Block] |
|  |  |  |  |  | Real Estate |  |  | Commercial |  |  | Residential |  |  |  |  |  |  |  |  |
|  | Commercial |  |  | Construction |  |  | Mortgage |  |  | Mortgage |  |  | Consumer |  |  |  |  |
|  | Loans |  |  | Loans |  |  | Loans |  |  | and Equity Lines |  |  | and Other |  |  | Total |
|  | (In thousands) |
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance |  | $ | 1,837 |  |  | $ | - |  |  | $ | 877 |  |  | $ | 1,088 |  |  | $ | - |  |  | $ | 3,802 |
Balance |  | $ | 36,940 |  |  | $ | 4,873 |  |  | $ | 51,471 |  |  | $ | 13,602 |  |  | $ | - |  |  | $ | 106,886 |
Loans collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance |  | $ | 53,141 |  |  | $ | 19,626 |  |  | $ | 32,610 |  |  | $ | 13,194 |  |  | $ | 18 |  |  | $ | 118,589 |
Balance |  | $ | 2,705,025 |  |  | $ | 576,581 |  |  | $ | 6,672,729 |  |  | $ | 3,930,218 |  |  | $ | 4,349 |  |  | $ | 13,888,902 |
Total allowance |  | $ | 54,978 |  |  | $ | 19,626 |  |  | $ | 33,487 |  |  | $ | 14,282 |  |  | $ | 18 |  |  | $ | 122,391 |
Total balance |  | $ | 2,741,965 |  |  | $ | 581,454 |  |  | $ | 6,724,200 |  |  | $ | 3,943,820 |  |  | $ | 4,349 |  |  | $ | 13,995,788 |
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance |  | $ | 43 |  |  | $ | - |  |  | $ | 1,738 |  |  | $ | 353 |  |  | $ | - |  |  | $ | 2,134 |
Balance |  | $ | 43,495 |  |  | $ | 8,185 |  |  | $ | 52,664 |  |  | $ | 13,009 |  |  | $ | - |  |  | $ | 117,353 |
Loans collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance |  | $ | 49,753 |  |  | $ | 24,838 |  |  | $ | 35,872 |  |  | $ | 10,660 |  |  | $ | 22 |  |  | $ | 121,145 |
Balance |  | $ | 2,417,771 |  |  | $ | 670,620 |  |  | $ | 6,430,031 |  |  | $ | 3,229,345 |  |  | $ | 5,170 |  |  | $ | 12,752,937 |
Total allowance |  | $ | 49,796 |  |  | $ | 24,838 |  |  | $ | 37,610 |  |  | $ | 11,013 |  |  | $ | 22 |  |  | $ | 123,279 |
Total balance |  | $ | 2,461,266 |  |  | $ | 678,805 |  |  | $ | 6,482,695 |  |  | $ | 3,242,354 |  |  | $ | 5,170 |  |  | $ | 12,870,290 |

X
- Definition No Definition + References No definition available. + Details
Name: | caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock
Namespace Prefix: | caty_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition No Definition + References No definition available. + Details
Name: | caty_NonAccrualTroubledDebtRestructuringsTableTextBlock
Namespace Prefix: | caty_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of impaired loans and related allowance and charge-offs. + References No definition available. + Details
Name: | caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock
Namespace Prefix: | caty_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of troubled debt restructurings [table text block]. + References No definition available. + Details
Name: | caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock
Namespace Prefix: | caty_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=82894031&loc=SL6953803-111525 + Details
Name: | us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
Name: | us-gaap_PastDueFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
Name: | us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of credit losses for current financing receivables (such as trade and accounts receivable), including a rollforward of the balance. An alternative caption includes allowance for doubtful accounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_ScheduleOfCreditLossesForFinancingReceivablesCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
Name: | us-gaap_ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables and troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524 + Details
Name: | us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=caty_ImpairmentMethodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |