T D R that subsequently defaulted (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014 loans	Sep. 30, 2013 loans	Sep. 30, 2014 loans		Sep. 30, 2013 loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	248	236	558		764
Financing Receivable Modifications That Defaulted	$ 11,422	$ 10,759	$ 26,572		$ 44,471
Commercial Multi Family [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
Commercial Real Estate Non Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	2	2		3
Financing Receivable Modifications That Defaulted	0	1,415	937		2,554
Commercial Real Estate Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	1	3		3
Financing Receivable Modifications That Defaulted	0	385	377		5,512
Commercial And Industrial Loans [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	1	5		3
Financing Receivable Modifications That Defaulted	0	5	609		1,441
Commercial Real Estate Construction Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	1	0	1		0
Financing Receivable Modifications That Defaulted	952	0	952		0
Mortgages [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	41	37	92		179
Financing Receivable Modifications That Defaulted	8,679	6,896	19,270		28,922
Legacy [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	3	0	8		0
Financing Receivable Modifications That Defaulted	34	0	95		0
Finance Leases Portfolio Segment Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	6	0		16
Financing Receivable Modifications That Defaulted	0	176	0		241
Consumer Credit Card Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	166	148	354		448
Financing Receivable Modifications That Defaulted	1,314	1,320	3,075		4,247
Home Equity Line of Credit [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
Personal [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	35	35	79		106
Financing Receivable Modifications That Defaulted	412	450	992		1,442
Consumer Loans Auto Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	2	4	14		4
Financing Receivable Modifications That Defaulted	31	91	265		91
Consumer Other Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	2	0		2
Financing Receivable Modifications That Defaulted	0	21	0		21
PUERTO RICO
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	247	234	556	[1]	761	[1]
Financing Receivable Modifications That Defaulted	11,312	9,344	25,555	[1]	41,917	[1]
PUERTO RICO | Commercial Multi Family [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	1		0
Financing Receivable Modifications That Defaulted	0	0	30		0
PUERTO RICO | Commercial Real Estate Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	1	3		3
Financing Receivable Modifications That Defaulted	0	385	377		5,512
PUERTO RICO | Commercial And Industrial Loans [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	1	5		3
Financing Receivable Modifications That Defaulted	0	5	609		1,441
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	1	0	1		0
Financing Receivable Modifications That Defaulted	952	0	952		0
PUERTO RICO | Mortgages [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	40	37	91		179
Financing Receivable Modifications That Defaulted	8,569	6,896	19,160		28,922
PUERTO RICO | Finance Leases Portfolio Segment Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	3	6	8		16
Financing Receivable Modifications That Defaulted	34	176	95		241
PUERTO RICO | Consumer Credit Card Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	166	148	354		448
Financing Receivable Modifications That Defaulted	1,314	1,320	3,075		4,247
PUERTO RICO | Home Equity Line of Credit [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
PUERTO RICO | Personal [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	35	35	79		106
Financing Receivable Modifications That Defaulted	412	450	992		1,442
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	2	4	14		4
Financing Receivable Modifications That Defaulted	31	91	265		91
PUERTO RICO | Consumer Other Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	2	0		2
Financing Receivable Modifications That Defaulted	0	21	0		21
UNITED STATES
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	1	2	2		3
Financing Receivable Modifications That Defaulted	110	1,415	1,017		2,554
UNITED STATES | Commercial Multi Family [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	2	1		3
Financing Receivable Modifications That Defaulted	0	1,415	907		2,554
UNITED STATES | Commercial Real Estate Owner Occupied [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Commercial And Industrial Loans [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Mortgages [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	1	0	1		0
Financing Receivable Modifications That Defaulted	110	0	110		0
UNITED STATES | Legacy [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Consumer Credit Card Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Home Equity Line of Credit [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Personal [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	0	0	0		0
UNITED STATES | Consumer Other Financing Receivable Member
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Modifications Number of Contracts that Default	0	0	0		0
Financing Receivable Modifications That Defaulted	$ 0	$ 0	$ 0		$ 0

[1] Excludes loans for which the Corporation has entered into liquidation agreements with borrowers and guarantors and is accepting payments which differ from the contractual payment schedule. The Corporation considers these as defaulted loans and does not intent to return them to accrual status.