Allowance for Loan and Lease Losses (Gross Loan and Allowance for loan and lease losses) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 72,285,000	$ 54,289,000
Loans and Leases Receivable, Gross, Carrying Amount	4,204,871,000	4,245,364,000
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	20,000	141,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,842,000	4,159,000
Financing Receivable, Allowance for Credit Losses	3,862,000	4,300,000	$ 5,542,000	$ 4,597,000
Financing Receivable, Individually Evaluated for Impairment	747,000	1,150,000
Financing Receivable, Collectively Evaluated for Impairment	54,517,000	90,300,000
Loans and Leases Receivable, Gross, Carrying Amount	55,264,000	91,450,000
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	20,000	141,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	22,000	28,000
Financing Receivable, Allowance for Credit Losses	42,000	169,000	26,000	65,000
Financing Receivable, Individually Evaluated for Impairment	747,000	1,150,000
Financing Receivable, Collectively Evaluated for Impairment	3,633,000	4,412,000
Loans and Leases Receivable, Gross, Carrying Amount	4,380,000	5,562,000
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	3,225,000	3,028,000
Financing Receivable, Allowance for Credit Losses	3,225,000	3,028,000	3,429,000	1,211,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	28,915,000	32,862,000
Loans and Leases Receivable, Gross, Carrying Amount	28,915,000	32,862,000
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	595,000	1,103,000
Financing Receivable, Allowance for Credit Losses	595,000	1,103,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	21,969,000	53,026,000
Loans and Leases Receivable, Gross, Carrying Amount	21,969,000	53,026,000
Acquired BBVAPR accounted under ASC 310-30 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	820,272,000	951,794,000
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	532,053,000	569,253,000
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	243,092,000	292,564,000
Acquired BBVAPR accounted under ASC 310-30 [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,431,000	4,301,000
Originated Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	19,694,000	9,387,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	73,024,000	49,913,000
Financing Receivable, Allowance for Credit Losses	92,718,000	59,300,000	112,626,000	51,439,000
Financing Receivable, Individually Evaluated for Impairment	156,941,000	144,789,000
Financing Receivable, Collectively Evaluated for Impairment	3,047,951,000	2,901,481,000
Loans and Leases Receivable, Gross, Carrying Amount	3,204,892,000	3,046,270,000
Originated Loan [Member] | Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	9,121,000	7,761,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	11,318,000	9,583,000
Financing Receivable, Allowance for Credit Losses	20,439,000	17,344,000	18,352,000	19,679,000
Financing Receivable, Individually Evaluated for Impairment	85,403,000	91,650,000
Financing Receivable, Collectively Evaluated for Impairment	598,204,000	629,844,000
Loans and Leases Receivable, Gross, Carrying Amount	683,607,000	721,494,000
Originated Loan [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1	10,573,000	1,626,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	19,685,000	7,369,000
Financing Receivable, Allowance for Credit Losses	30,258,000	8,995,000	64,791,000	8,432,000
Financing Receivable, Individually Evaluated for Impairment	71,538,000	53,139,000
Financing Receivable, Collectively Evaluated for Impairment	1,235,723,000	1,224,727,000
Loans and Leases Receivable, Gross, Carrying Amount	1,307,261,000	1,277,866,000
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	16,454,000	13,067,000
Financing Receivable, Allowance for Credit Losses	16,454,000	13,067,000	11,197,000	9,072,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	330,039,000	290,515,000
Loans and Leases Receivable, Gross, Carrying Amount	330,039,000	290,515,000
Originated Loan [Member] | Finance Leases Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	25,567,000	19,463,000	18,261,000	14,255,000
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	25,567,000	19,463,000
Financing Receivable, Allowance for Credit Losses	25,567,000	19,463,000	18,261,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	883,985,000	756,395,000
Loans and Leases Receivable, Gross, Carrying Amount	883,985,000	756,395,000
Originated Loan [Member] | Unallocated Financing Receivables
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	0	431,000
Financing Receivable, Allowance for Credit Losses	0	431,000	$ 25,000	$ 1,000
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	0	0
Loans and Leases Receivable, Gross, Carrying Amount	$ 0	$ 0