Note Loans (Changes in the carrying amount and the accretable yield for the acquired loans in the Westernbank FDIC-assisted transaction) (Detail) - Westernbank Puerto Rico - Acquired loans in an FDIC assisted transaction - ASC Subtopic 310-30 - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015	Jun. 30, 2016		Jun. 30, 2015	Dec. 31, 2015
Accretable yield
Beginning Balance	$ 1,128,808		$ 1,258,948	$ 1,112,458		$ 1,271,337
Accretion	(48,476)		(53,994)	(92,009)		(109,691)
Change In Expected Cash Flows	(8,652)		40,970	51,231		84,278
Ending Balance	1,071,680		1,245,924	1,071,680		1,245,924
Carrying amount of loans
Beginning Balance	1,935,441	[1]	2,367,096	1,974,501	[1]	2,444,172
Accretion	48,476		53,994	92,009		109,691
Collections	(183,974)	[2]	(284,012)	(266,567)	[3]	(416,785)
Ending Balance	1,799,943	[1],[4]	2,137,078	1,799,943	[1],[4]	2,137,078
Less: Allowance for loan losses	(66,995)	[4]	(47,049)	(66,995)	[4]	(47,049)	$ (63,563)
Carrying amount, net of allowance	1,732,948	[4]	2,090,029	1,732,948	[4]	2,090,029	1,910,938
Non-credit Impaired Loans
Accretable yield
Beginning Balance	1,118,276		1,254,249	1,105,732		1,265,752
Accretion	(45,137)		(50,228)	(87,137)		(104,004)
Change In Expected Cash Flows	(11,168)		35,755	43,376		78,028
Ending Balance	1,061,971		1,239,776	1,061,971		1,239,776
Carrying amount of loans
Beginning Balance	1,865,940	[1]	2,211,781	1,898,146	[1]	2,272,142
Accretion	45,137		50,228	87,137		104,004
Collections	(156,464)	[2]	(239,516)	(230,670)	[3]	(353,653)
Ending Balance	1,754,613	[1],[4]	2,022,493	1,754,613	[1],[4]	2,022,493
Less: Allowance for loan losses	(57,895)	[4]	(42,503)	(57,895)	[4]	(42,503)	(59,753)
Carrying amount, net of allowance	1,696,718	[4]	1,979,990	1,696,718	[4]	1,979,990	1,838,393
Credit Impaired Loans
Accretable yield
Beginning Balance	10,532		4,699	6,726		5,585
Accretion	(3,339)		(3,766)	(4,872)		(5,687)
Change In Expected Cash Flows	2,516		5,215	7,855		6,250
Ending Balance	9,709		6,148	9,709		6,148
Carrying amount of loans
Beginning Balance	69,501	[1]	155,315	76,355	[1]	172,030
Accretion	3,339		3,766	4,872		5,687
Collections	(27,510)	[2]	(44,496)	(35,897)	[3]	(63,132)
Ending Balance	45,330	[1],[4]	114,585	45,330	[1],[4]	114,585
Less: Allowance for loan losses	(9,100)	[4]	(4,546)	(9,100)	[4]	(4,546)	(3,810)
Carrying amount, net of allowance	$ 36,230	[4]	$ 110,039	$ 36,230	[4]	$ 110,039	$ 72,545

[1] The carrying amount of loans acquired from Westernbank and accounted for under ASC 310-30 which remains subject to the loss sharing agreement with the FDIC amounted to approximately $597 million as of June 30, 2016 and $636 million as of December 31, 2015.

[2] For the quarter ended June 30, 2016, includes the impact of the bulk sale of loans with a carrying value of approximately $99 million.

[3] For the quarter ended June 30, 2016, includes the impact of the bulk sale of loans with a carrying value of approximately $99 million.

[4] The carrying amount of loans acquired from Westernbank and accounted for under ASC 310-30 which remain subject to the loss sharing agreement with the FDIC amounted to approximately $636 million as of December 31, 2015.