BUSINESS COMBINATION - Business Combination (Parenthetical) (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 27, 2015	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2014
Business Acquisition [Line Items]
Business Combination Bargain Purchase After Tax Gain Recognized Amount	$ 8,200,000
Premium On Loans Acquired	1,300,000
Liabilities Fair Value Adjustment	800,000
Contractually outstanding principal and interest at acquisition		$ 218,100,000	$ 207,300,000	$ 135,500,000
Discount On Purchased Credit Impaired Loans	13,400,000
Purchased Credit Impaired Loans Acquired	$ 93,300,000
Branches Doral	10
Non Sop Unpaid Principal Balance	$ 227,900,000
Conversion Costs [Member]
Business Acquisition [Line Items]
Business Combination Acquisition Nonrecurring Costs		4,600,000
Interim Servicing Costs [Member]
Business Acquisition [Line Items]
Business Combination Acquisition Nonrecurring Costs		$ 3,600,000
Deposits [Member]
Business Acquisition [Line Items]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Liabilities	522,700,000
Property Plant And Equipment [Member]
Business Acquisition [Line Items]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets	5,500,000
Cash [Member]
Business Acquisition [Line Items]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets	217,700,000
Loans [Member]
Business Acquisition [Line Items]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets	$ 324,800,000