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Loans Receivable (Recorded Investment in loans individually evaluated for impairment) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Financing Receivable, Impaired [Line Items] |  |
Allowance for loan and lease losses | $ 154,160 | $ 115,937
Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | 171,359 | 162,322
Recorded Investment | 153,550 | 144,789
Allowance for loan and lease losses | $ 14,747 | $ 9,387
Coverage | 0.10% | 0.06%
Acquired BBVAPR Accounted for under ASC 310-20 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 926 | $ 1,184
Recorded Investment | 748 | 1,150
Allowance for loan and lease losses | $ 12 | $ 141
Coverage | 0.02% | 0.12%
Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 857,528 | $ 887,646
Recorded Investment | 824,540 | 850,454
Allowance for loan and lease losses | $ 40,110 | $ 31,056
Coverage | 0.05% | 0.04%
Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 139,737 | $ 170,038
Recorded Investment | 121,739 | 146,530
Allowance for loan and lease losses | $ 23,146 | $ 21,281
Coverage | 0.19% | 0.15%
Commercial impaired loans with specific allowance [Member] | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 33,159 | $ 13,183
Recorded Investment | 30,465 | 11,698
Allowance for loan and lease losses | $ 5,223 | $ 1,626
Coverage | 0.17% | 0.14%
Commercial impaired loans with specific allowance [Member] | Acquired BBVAPR Accounted for under ASC 310-20 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 926 | $ 944
Recorded Investment | 748 | 929
Allowance for loan and lease losses | $ 12 | $ 141
Coverage | 0.02% | 0.15%
Residential troubled-debt restructuring impaired loans with specific allowance [Member] | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 95,680 | $ 100,101
Recorded Investment | 86,511 | 91,650
Allowance for loan and lease losses | $ 9,524 | $ 7,761
Coverage | 0.11% | 0.08%
Commercial impaired loans with no specific allowance financing receivable | Originated Loan [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 42,520 | $ 49,038
Recorded Investment | $ 36,574 | $ 41,441
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 | $ 240
Recorded Investment | $ 0 | $ 221
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 | $ 554,175 | $ 595,757
Recorded Investment | 532,948 | 569,250
Allowance for loan and lease losses | $ 8,931 | $ 2,682
Coverage | 0.02% | 0.00%
Commercial impaired loan pool [Member] | Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 254,006 | $ 199,092
Recorded Investment | 242,334 | 195,528
Allowance for loan and lease losses | $ 23,941 | $ 23,452
Coverage | 0.10% | 0.12%
Auto impaired loan pool. | Acquired BBVAPR Accounted under ASC 310-30 [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 49,347 | $ 92,797
Recorded Investment | 49,258 | 85,676
Allowance for loan and lease losses | $ 7,238 | $ 4,922
Coverage | 0.15% | 0.06%
Consumer impaired loan pool. | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 15 | $ 29
Recorded Investment | 1,220 | 1,372
Allowance for loan and lease losses | $ 5 | $ 6
Coverage | 0.00% | 0.00%
Loans secured by 1-4 family residential properties, covered [Member] | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 81,679 | $ 88,017
Recorded Investment | 68,996 | 73,018
Allowance for loan and lease losses | $ 14,219 | $ 11,947
Coverage | 0.21% | 0.16%
Commercial and Other Construction Loan [Member] | Eurobank Acquired Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal | $ 58,043 | $ 81,992
Recorded Investment | 51,523 | 72,140
Allowance for loan and lease losses | $ 8,922 | $ 9,328
Coverage | 0.17% | 0.13%

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + 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 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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