Allowance for Loan and Lease Losses (Allowance for loan and lease losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision For Loan And Lease Losses	$ 113,139	$ 65,076	$ 161,501
Acquired BBVAPR Accounted for under ASC 310-20 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	4,300	5,542	4,597
Charge-offs	4,156	5,816	9,345
Recoveries	1,871	2,319	2,821
Provision For Loan And Lease Losses	1,847	2,255	7,469
Balance at end of period	3,862	4,300	5,542
Acquired BBVAPR Accounted for under ASC 310-20 [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	169	26	65
Charge-offs	132	42	42
Recoveries	5	73	31
Provision For Loan And Lease Losses	0	112	(28)
Balance at end of period	42	169	26
Acquired BBVAPR Accounted for under ASC 310-20 [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	3,028	3,429	1,211
Charge-offs	3,048	3,619	4,755
Recoveries	446	301	680
Provision For Loan And Lease Losses	2,799	2,917	6,293
Balance at end of period	3,225	3,028	3,429
Acquired BBVAPR Accounted for under ASC 310-20 [Member] | Auto Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,103	2,087	3,321
Charge-offs	976	2,155	4,548
Recoveries	1,420	1,945	2,110
Provision For Loan And Lease Losses	(952)	(774)	1,204
Balance at end of period	595	1,103	2,087
Originated Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	59,300	112,626	51,439
Charge-offs	61,856	112,497	53,001
Recoveries	15,389	14,113	14,852
Provision For Loan And Lease Losses	79,885	45,058	99,336
Balance at end of period	92,718	59,300	112,626
Originated Loan [Member] | Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	17,344	18,352	19,679
Charge-offs	6,623	6,767	5,397
Recoveries	585	330	391
Provision For Loan And Lease Losses	9,133	5,429	3,679
Balance at end of period	20,439	17,344	18,352
Originated Loan [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	8,995	64,791	8,432
Charge-offs	7,684	62,445	5,546
Recoveries	1,281	460	432
Provision For Loan And Lease Losses	27,666	6,189	61,473
Balance at end of period	30,258	8,995	64,791
Originated Loan [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	13,067	11,197	9,072
Charge-offs	13,641	11,554	8,683
Recoveries	1,209	452	871
Provision For Loan And Lease Losses	15,819	12,972	9,937
Balance at end of period	16,454	13,067	11,197
Originated Loan [Member] | Leasing [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	19,463	18,261	14,255
Charge-offs	33,908	31,731	33,375
Recoveries	12,314	12,871	13,158
Provision For Loan And Lease Losses	27,698	20,062	24,223
Balance at end of period	25,567	19,463	18,261
Originated Loan [Member] | Auto and Leasing
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	19,463	18,261
Balance at end of period	25,567	19,463	18,261
Originated Loan [Member] | Unallocated Financing Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	431	25	1
Charge-offs	0	0	0
Recoveries	0	0	0
Provision For Loan And Lease Losses	(431)	406	24
Balance at end of period	0	431	25
Acquired loans [Member] | Acquired BBVAPR accounted under ASC 310-30 [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	31,056	25,785	13,481
Charge-offs		282	4,352
Provision For Loan And Lease Losses	24,681	15,508	16,656
Allowance de-recognition from new policy	(9,982)	(9,955)
Balance at end of period	45,755	31,056	25,785
Acquired loans [Member] | Acquired BBVAPR accounted under ASC 310-30 [Member] | Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	2,682	1,762	5
Charge-offs		14	0
Provision For Loan And Lease Losses	11,497	1,105	1,757
Allowance de-recognition from new policy	(94)	(171)
Balance at end of period	14,085	2,682	1,762
Acquired loans [Member] | Acquired BBVAPR accounted under ASC 310-30 [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	23,452	21,161	13,476
Charge-offs		66	4,352
Provision For Loan And Lease Losses	9,758	11,710	12,037
Allowance de-recognition from new policy	(9,519)	(9,353)
Balance at end of period	23,691	23,452	21,161
Acquired loans [Member] | Acquired BBVAPR accounted under ASC 310-30 [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0	0	0
Charge-offs		0	0
Provision For Loan And Lease Losses	18	0	0
Allowance de-recognition from new policy	0	0
Balance at end of period	18	0	0
Acquired loans [Member] | Acquired BBVAPR accounted under ASC 310-30 [Member] | Auto Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	4,922	2,862	0
Charge-offs		202	0
Provision For Loan And Lease Losses	3,408	2,693	2,862
Allowance de-recognition from new policy	(369)	(431)
Balance at end of period	$ 7,961	$ 4,922	$ 2,862