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LOAN PORTFOLIO - Impaired loans (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | $ 492,721 |  | $ 492,721 |  |  | $ 571,872 |  |
Unpaid Principal Balance with Related Allowance | 557,145 |  | 557,145 |  |  | 638,094 |  |
Related Allowance | 36,835 | $ 49,514 | 36,835 | $ 49,514 |  | 53,976 |  |
Recorded Investment with no Related Allowance | 219,107 |  | 219,107 |  |  | 188,397 |  |
Unpaid Principal Balance with no Related Allowance | 301,279 |  | 301,279 |  |  | 252,207 |  |
Recorded Investment | 711,828 | 740,134 | 711,828 | 740,134 | $ 732,871 | 760,269 | $ 746,280 | $ 790,308
Unpaid Principal Balance | 858,424 |  | 858,424 |  |  | 890,301 |  |
Average Recorded Investments | 722,250 | 751,497 | 735,384 | 755,893 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 8,004 | 6,554 | 15,937 | 12,840 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 414 | 776 | 806 | 1,389 |  |  |  |
Impaired Financing Receivable, Interest Income | 8,418 | 7,330 | 16,743 | 14,229 |  |  |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 284,821 |  | 284,821 |  |  | 293,494 |  |
Related Allowance | 18,788 | 19,804 | 18,788 | 19,804 |  | 19,965 |  |
Recorded Investment with no Related Allowance | 106,195 |  | 106,195 |  |  | 110,238 |  |
Recorded Investment | 391,016 | 409,085 | 391,016 | 409,085 |  |  |  |
Residential Portfolio Segment [Member] | Other Loans Member [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 284,821 |  | 284,821 |  |  | 293,494 |  |
Unpaid Principal Balance with Related Allowance | 314,596 |  | 314,596 |  |  | 325,897 |  |
Related Allowance | 18,788 |  | 18,788 |  |  | 19,965 |  |
Recorded Investment with no Related Allowance | 106,195 |  | 106,195 |  |  | 110,238 |  |
Unpaid Principal Balance with no Related Allowance | 147,771 |  | 147,771 |  |  | 148,920 |  |
Recorded Investment | 391,016 |  | 391,016 |  |  | 403,732 |  |
Unpaid Principal Balance | 462,367 |  | 462,367 |  |  | 474,817 |  |
Average Recorded Investments | 392,477 | 411,331 | 394,159 | 413,137 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 4,364 | 4,358 | 8,759 | 8,618 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 282 | 371 | 532 | 824 |  |  |  |
Impaired Financing Receivable, Interest Income | 4,646 | 4,729 | 9,291 | 9,442 |  |  |  |
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 51,283 |  | 51,283 |  |  | 61,162 |  |
Unpaid Principal Balance with Related Allowance | 72,436 |  | 72,436 |  |  | 76,027 |  |
Related Allowance | 3,880 | 10,592 | 3,880 | 10,592 |  | 9,693 |  |
Recorded Investment with no Related Allowance | 28,854 |  | 28,854 |  |  | 30,030 |  |
Unpaid Principal Balance with no Related Allowance | 46,155 |  | 46,155 |  |  | 48,085 |  |
Recorded Investment | 80,137 | 111,371 | 80,137 | 111,371 |  | 91,192 |  |
Unpaid Principal Balance | 118,591 |  | 118,591 |  |  | 124,112 |  |
Average Recorded Investments | 81,281 | 114,749 | 84,551 | 114,379 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 929 | 624 | 1,871 | 1,173 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 20 | 16 | 22 | 44 |  |  |  |
Impaired Financing Receivable, Interest Income | 949 | 640 | 1,893 | 1,217 |  |  |  |
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 127,909 |  | 127,909 |  |  | 184,068 |  |
Unpaid Principal Balance with Related Allowance | 139,958 |  | 139,958 |  |  | 201,116 |  |
Related Allowance | 9,023 | 12,204 | 9,023 | 12,204 |  | 17,684 |  |
Recorded Investment with no Related Allowance | 79,600 |  | 79,600 |  |  | 43,358 |  |
Unpaid Principal Balance with no Related Allowance | 100,325 |  | 100,325 |  |  | 49,253 |  |
Recorded Investment | 207,509 | 175,575 | 207,509 | 175,575 |  | 227,426 |  |
Unpaid Principal Balance | 240,283 |  | 240,283 |  |  | 250,369 |  |
Average Recorded Investments | 214,375 | 179,978 | 221,327 | 181,950 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 2,122 | 856 | 4,125 | 1,598 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 50 | 348 | 151 | 432 |  |  |  |
Impaired Financing Receivable, Interest Income | 2,172 | 1,204 | 4,276 | 2,030 |  |  |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 2,784 |  | 2,784 |  |  | 4,162 |  |
Related Allowance | 574 | 1,061 | 574 | 1,061 |  | 760 |  |
Recorded Investment with no Related Allowance | 3,245 |  | 3,245 |  |  | 2,431 |  |
Recorded Investment | 6,029 | 11,261 | 6,029 | 11,261 |  |  |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 523 |  | 523 |  |  | 1,718 |  |
Unpaid Principal Balance with Related Allowance | 523 |  | 523 |  |  | 2,370 |  |
Related Allowance | 11 |  | 11 |  |  | 208 |  |
Recorded Investment with no Related Allowance | 956 |  | 956 |  |  | 0 |  |
Unpaid Principal Balance with no Related Allowance | 1,531 |  | 1,531 |  |  | 0 |  |
Recorded Investment | 1,479 |  | 1,479 |  |  | 1,718 |  |
Unpaid Principal Balance | 2,054 |  | 2,054 |  |  | 2,370 |  |
Average Recorded Investments | 1,483 | 252 | 1,489 | 252 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 3 | 0 | 3 | 0 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 0 | 0 | 0 | 0 |  |  |  |
Impaired Financing Receivable, Interest Income | 3 | 0 | 3 | 0 |  |  |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial Loan [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance with Related Allowance | 0 |  | 0 |  |  | 0 |  |
Related Allowance | 0 |  | 0 |  |  | 0 |  |
Recorded Investment with no Related Allowance | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance with no Related Allowance | 0 |  | 0 |  |  | 0 |  |
Recorded Investment | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance | 0 |  | 0 |  |  | 0 |  |
Average Recorded Investments | 0 | 0 | 0 | 0 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 0 | 0 | 0 | 0 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 0 | 0 | 0 | 0 |  |  |  |
Impaired Financing Receivable, Interest Income | 0 | 0 | 0 | 0 |  |  |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 2,261 |  | 2,261 |  |  | 2,444 |  |
Unpaid Principal Balance with Related Allowance | 2,619 |  | 2,619 |  |  | 2,923 |  |
Related Allowance | 563 |  | 563 |  |  | 552 |  |
Recorded Investment with no Related Allowance | 2,289 |  | 2,289 |  |  | 2,431 |  |
Unpaid Principal Balance with no Related Allowance | 2,862 |  | 2,862 |  |  | 2,927 |  |
Recorded Investment | 4,550 |  | 4,550 |  |  | 4,875 |  |
Unpaid Principal Balance | 5,481 |  | 5,481 |  |  | 5,850 |  |
Average Recorded Investments | 4,594 | 11,370 | 4,655 | 11,522 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 20 | 23 | 41 | 47 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 7 | 7 | 18 | 15 |  |  |  |
Impaired Financing Receivable, Interest Income | 27 | 30 | 59 | 62 |  |  |  |
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 25,924 |  | 25,924 |  |  | 28,986 |  |
Related Allowance | 4,570 | 5,853 | 4,570 | 5,853 |  | 5,874 |  |
Recorded Investment with no Related Allowance | 1,213 |  | 1,213 |  |  | 2,340 |  |
Recorded Investment | 27,137 | 32,842 | 27,137 | 32,842 |  |  |  |
Consumer Portfolio Segment [Member] | Other Loans Member [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 8,299 |  | 8,299 |  |  | 9,291 |  |
Unpaid Principal Balance with Related Allowance | 9,229 |  | 9,229 |  |  | 10,066 |  |
Related Allowance | 888 |  | 888 |  |  | 2,083 |  |
Recorded Investment with no Related Allowance | 1,092 |  | 1,092 |  |  | 2,068 |  |
Unpaid Principal Balance with no Related Allowance | 2,422 |  | 2,422 |  |  | 2,750 |  |
Recorded Investment | 9,391 |  | 9,391 |  |  | 11,359 |  |
Unpaid Principal Balance | 11,651 |  | 11,651 |  |  | 12,816 |  |
Average Recorded Investments | 9,648 | 11,830 | 10,093 | 12,073 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 234 | 276 | 460 | 561 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 55 | 34 | 83 | 74 |  |  |  |
Impaired Financing Receivable, Interest Income | 289 | 310 | 543 | 635 |  |  |  |
Consumer Portfolio Segment [Member] | Consumer Auto Loans [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 16,003 |  | 16,003 |  |  | 17,781 |  |
Unpaid Principal Balance with Related Allowance | 15,969 |  | 15,969 |  |  | 17,781 |  |
Related Allowance | 3,567 |  | 3,567 |  |  | 3,689 |  |
Recorded Investment with no Related Allowance | 121 |  | 121 |  |  | 250 |  |
Unpaid Principal Balance with no Related Allowance | 213 |  | 213 |  |  | 250 |  |
Recorded Investment | 16,124 |  | 16,124 |  |  | 18,031 |  |
Unpaid Principal Balance | 16,182 |  | 16,182 |  |  | 18,031 |  |
Average Recorded Investments | 16,697 | 20,310 | 17,274 | 20,826 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 297 | 389 | 607 | 784 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 0 | 0 | 0 | 0 |  |  |  |
Impaired Financing Receivable, Interest Income | 297 | 389 | 607 | 784 |  |  |  |
Consumer Portfolio Segment [Member] | Finance Lease [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 1,622 |  | 1,622 |  |  | 1,914 |  |
Unpaid Principal Balance with Related Allowance | 1,815 |  | 1,815 |  |  | 1,914 |  |
Related Allowance | 115 |  | 115 |  |  | 102 |  |
Recorded Investment with no Related Allowance | 0 |  | 0 |  |  | 22 |  |
Unpaid Principal Balance with no Related Allowance | 0 |  | 0 |  |  | 22 |  |
Recorded Investment | 1,622 |  | 1,622 |  |  | 1,936 |  |
Unpaid Principal Balance | 1,815 |  | 1,815 |  |  | 1,936 |  |
Average Recorded Investments | 1,695 | 1,677 | 1,836 | 1,754 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 35 | 28 | 71 | 59 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 0 | 0 | 0 | 0 |  |  |  |
Impaired Financing Receivable, Interest Income | 35 | 28 | 71 | 59 |  |  |  |
FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member] |  |  |  |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |  |  |  |
Recorded Investment with Related Allowance | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance with Related Allowance | 0 |  | 0 |  |  | 0 |  |
Related Allowance | 0 |  | 0 |  |  | 0 |  |
Recorded Investment with no Related Allowance | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance with no Related Allowance | 0 |  | 0 |  |  | 0 |  |
Recorded Investment | 0 |  | 0 |  |  | 0 |  |
Unpaid Principal Balance | 0 |  | 0 |  |  | $ 0 |  |
Average Recorded Investments | 0 | 0 | 0 | 0 |  |  |  |
Interest Income on Impaired Loans Accrual Basis | 0 | 0 | 0 | 0 |  |  |  |
Interest Income on Impaired Loans Cash Basis | 0 | 0 | 0 | 0 |  |  |  |
Impaired Financing Receivable, Interest Income | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |

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