SUBSEQUENT EVENTS - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				12 Months Ended
	Feb. 27, 2015	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Classified and non-performing loans sold			$ 16,300		$ 147,500
OREO Sold					2,900
Branches Doral	10
Gains Losses On Extinguishment Of Debt						$ 4,217	$ 0	$ 0
Trust Preferred Securties Discount				30.00%
Trust Preferred Securities Winning Bid				70.00%
Trust Preferred Securities Repurchases				$ 10,000
Sales Price Of Bulk Sale					87,300
Proceeds From Sale Of Non Performing Assets Sold			11,300
PreTax Loss Bulk Sale			1,800		48,700
Reserves Allocated To Bulk Sale			2,800		15,300	2,800
Bulk Sale Charge Offs			4,600		61,400
Classified And Non Performing Loans Sold Outstanding Balance			20,100
Deferred Tax Asset Pass Through Net Operating Losses			$ 14,700			$ 14,700
Commercial Mortgage Loans [Member]
Subsequent Event [Line Items]
Classified and non-performing loans sold					90,700
Commercial And Industrial Loan [Member]
Subsequent Event [Line Items]
Classified and non-performing loans sold					45,800
Construction Loans [Member]
Subsequent Event [Line Items]
Classified and non-performing loans sold					$ 11,000
Puerto Rico Electric Power Authority [Member]
Subsequent Event [Line Items]
Classified and non-performing loans sold		$ 64,000
Proceeds From Sale Of Non Performing Assets Sold		53,200
PreTax Loss Bulk Sale		600
Reserves Allocated To Bulk Sale		10,200
Classified And Non Performing Loans Sold Outstanding Balance		$ 75,000