Allowance for Loan and Lease Losses (Gross Loan and Allowance for loan and lease losses) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquired BBVAPR Accounted for under ASC 310-20 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	$ 2,000	$ 14,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,571,000	2,048,000
Financing Receivable, Allowance for Credit Losses	1,573,000	2,062,000	$ 3,862,000	$ 4,300,000
Financing Receivable, Individually Evaluated for Impairment	678,000	747,000
Financing Receivable, Collectively Evaluated for Impairment	22,392,000	30,222,000
Loans and Leases Receivable, Gross, Carrying Amount	23,070,000	30,969,000
Acquired BBVAPR Accounted for under ASC 310-20 [Member] \| Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	2,000	14,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,000	8,000
Financing Receivable, Allowance for Credit Losses	4,000	22,000	42,000	169,000
Financing Receivable, Individually Evaluated for Impairment	678,000	747,000
Financing Receivable, Collectively Evaluated for Impairment	1,463,000	1,799,000
Loans and Leases Receivable, Gross, Carrying Amount	2,141,000	2,546,000
Acquired BBVAPR Accounted for under ASC 310-20 [Member] \| Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,564,000	1,905,000
Financing Receivable, Allowance for Credit Losses	1,564,000	1,905,000	3,225,000	3,028,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	20,794,000	23,988,000
Loans and Leases Receivable, Gross, Carrying Amount	20,794,000	23,988,000
Acquired BBVAPR Accounted for under ASC 310-20 [Member] \| Auotomobile Loans Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	5,000	135,000
Financing Receivable, Allowance for Credit Losses	5,000	135,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	135,000	4,435,000
Loans and Leases Receivable, Gross, Carrying Amount	135,000	4,435,000
Acquired BBVAPR accounted under ASC 310-30 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	531,015,000	689,612,000
Acquired BBVAPR accounted under ASC 310-30 [Member] \| Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	411,531,000	492,890,000
Acquired BBVAPR accounted under ASC 310-30 [Member] \| Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	117,694,000	182,319,000
Originated Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	15,089,000	18,620,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	68,382,000	76,568,000
Financing Receivable, Allowance for Credit Losses	83,471,000	95,188,000	92,718,000	58,869,000
Financing Receivable, Individually Evaluated for Impairment	131,646,000	165,403,000
Financing Receivable, Collectively Evaluated for Impairment	3,752,634,000	3,579,669,000
Loans and Leases Receivable, Gross, Carrying Amount	3,884,280,000	3,745,072,000
Originated Loan [Member] \| Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	6,874,000	10,186,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,853,000	9,597,000
Financing Receivable, Allowance for Credit Losses	8,727,000	19,783,000	20,439,000	17,344,000
Financing Receivable, Individually Evaluated for Impairment	71,196,000	84,174,000
Financing Receivable, Collectively Evaluated for Impairment	506,220,000	584,635,000
Loans and Leases Receivable, Gross, Carrying Amount	577,416,000	668,809,000
Originated Loan [Member] \| Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	8,215,000	8,434,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	17,774,000	21,892,000
Financing Receivable, Allowance for Credit Losses	25,989,000	30,326,000	30,258,000	8,995,000
Financing Receivable, Individually Evaluated for Impairment	60,450,000	81,229,000
Financing Receivable, Collectively Evaluated for Impairment	1,607,044,000	1,516,359,000
Loans and Leases Receivable, Gross, Carrying Amount	1,667,494,000	1,597,588,000
Originated Loan [Member] \| Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	16,882,000	15,571,000
Financing Receivable, Allowance for Credit Losses	16,882,000	15,571,000	16,454,000	13,067,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	361,638,000	348,980,000
Loans and Leases Receivable, Gross, Carrying Amount	361,638,000	348,980,000
Originated Loan [Member] \| Auto and Leasing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	31,873,000	29,508,000
Financing Receivable, Allowance for Credit Losses	31,873,000	29,508,000	$ 25,567,000	$ 19,463,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	1,277,732,000	1,129,695,000
Loans and Leases Receivable, Gross, Carrying Amount	$ 1,277,732,000	$ 1,129,695,000

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-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 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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