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Loans (Recorded Investment in loans individually evaluated for impairment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Financing Receivable, Impaired [Line Items] |  |
Allowance for loan and lease losses | $ 162,642 | $ 164,231
Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | 189,861 | 188,536
Recorded Investment | 166,195 | 165,403
Allowance for loan and lease losses | $ 19,783 | $ 18,620
Coverage | 0.12% | 0.11%
Acquired BBVAPR Accounted for under ASC 310-20 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 926 | $ 926
Recorded Investment | 678 | 747
Allowance for loan and lease losses | $ 27 | $ 14
Coverage | 0.04% | 0.02%
Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 638,656 | $ 701,501
Recorded Investment | 629,352 | 688,083
Allowance for loan and lease losses | $ 45,427 | $ 42,010
Coverage | 7.00% | 6.00%
Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 102,285 | $ 117,510
Recorded Investment | 98,375 | 111,230
Allowance for loan and lease losses | $ 25,578 | $ 24,971
Coverage | 0.26% | 0.22%
Commercial impaired loans with specific allowance [Member] | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 54,895 | $ 54,636
Recorded Investment | 50,524 | 49,092
Allowance for loan and lease losses | $ 9,168 | $ 8,434
Coverage | 0.18% | 0.17%
Commercial impaired loans with specific allowance [Member] | Acquired BBVAPR Accounted for under ASC 310-20 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 926 | $ 926
Recorded Investment | 678 | 747
Allowance for loan and lease losses | $ 27 | $ 14
Coverage | 0.04% | 0.02%
Residential troubled-debt restructuring impaired loans with specific allowance [Member] | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 94,501 | $ 95,659
Recorded Investment | 83,093 | 84,174
Allowance for loan and lease losses | $ 10,615 | $ 10,186
Coverage | 0.13% | 0.12%
Commercial impaired loans with no specific allowance financing receivable | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 40,465 | $ 38,241
Recorded Investment | $ 32,578 | $ 32,137
Coverage | 0.00% | 0.00%
Commercial impaired loans with no specific allowance financing receivable | Acquired BBVAPR Accounted for under ASC 310-20 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 0 | $ 0
Recorded Investment | $ 0 | $ 0
Coverage | 0.00% | 0.00%
Mortgage impaired loan pool [Member] | Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 479,998 | $ 498,537
Recorded Investment | 476,080 | 492,890
Allowance for loan and lease losses | $ 25,208 | $ 15,225
Coverage | 5.00% | 3.00%
Commercial impaired loan pool [Member] | Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 151,265 | $ 188,413
Recorded Investment | 146,810 | 180,790
Allowance for loan and lease losses | $ 17,083 | $ 20,641
Coverage | 12.00% | 11.00%
Auto impaired loan pool. | Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 7,393 | $ 14,551
Recorded Investment | 6,462 | 14,403
Allowance for loan and lease losses | $ 3,136 | $ 6,144
Coverage | 49.00% | 43.00%
Consumer impaired loan pool. | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal |  | $ 15
Recorded Investment |  | 4
Allowance for loan and lease losses |  | $ 4
Coverage |  | 1.00%
Loans secured by 1-4 family residential properties, covered [Member] | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 65,870 | $ 70,153
Recorded Investment | 59,956 | 63,406
Allowance for loan and lease losses | $ 17,213 | $ 15,382
Coverage | 0.29% | 0.24%
Commercial and Other Construction Loan [Member] | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 36,415 | $ 47,342
Recorded Investment | 38,419 | 47,820
Allowance for loan and lease losses | $ 8,365 | $ 9,585
Coverage | 0.22% | 0.20%

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