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Pledged Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | $ 3,076,463 | $ 1,925,904
Assets Not Pledged | 4,747,127 | 3,928,780
Securities Investment [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets Not Pledged | 676,095 | 637,509
Residential Mortgage [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets Not Pledged | 1,706,981 | 354,868
Commercial Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets Not Pledged | 1,529,642 | 1,414,054
Consumer Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets Not Pledged | 504,437 | 373,814
Auto And Leases Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Assets Not Pledged | 329,972 | 1,148,535
Investments [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 398,074 | 629,088
Mortgage Loan [Member] | Federal Home Loan Bank Advances [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 803,317 | 880,591
Commercial Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 692,800 | 416,225
Commercial Loan [Member] | Federal Home Loan Bank Advances [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 518,473 | 275,451
Auto Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 1,182,272 | 0
Securities Sold under Agreements to Repurchase, Short-Term [Member] | Investments [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 204,068 | 487,181
Derivative [Member] | Investments [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 1,775 | 423
Federal Reserve Bank Advances [Member] | Commercial Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 45,175 | 651
Bond For Trust Operation [Member] | Investments [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 323 | 322
Puerto Rico public fund deposits [Member] | Investments [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | 191,908 | 141,162
Puerto Rico public fund deposits [Member] | Commercial Loan [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged Financial Instruments Not Separately Reported Securities Pledged | $ 129,152 | $ 140,123

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- Definition Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
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