LOAN PORTFOLIO -Changes in Carrying Amount Of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable Impaired [Line Items]
Beggining balance: purchased credit-impaired loans		$ 169,690	$ 178,494	$ 173,913	$ 102,604
Purchased Credit Impaired Loans Aquired	[1]		0	0
Accretion		2,875	3,411	8,691	8,695
Purchased Credit Impaired Loans Foreclosures		(240)	(157)	(1,327)	(157)
Sop Collections		(4,184)	(5,663)	(13,136)	(14,946)
Ending balance: purchased credit-impaired loans		168,141	176,085	168,141	176,085
Allowance for loan losses Purchased Credit Impaired		(6,857)	(3,163)	(6,857)	(3,163)	$ (6,857)	$ (3,962)	$ (3,163)	$ 0
Ending balance: purchased credit-impaired loans, net		161,284	$ 172,922	$ 161,284	172,922
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities [Member]
Financing Receivable Impaired [Line Items]
Purchased Credit Impaired Loans Aquired	[1]	$ 0			$ 79,889

[1] For the nine-month period ended September 30, 2015, additions represents the estimated fair value of PCI loans acquired from Doral Bank at the date of acquisition.