GOODWILL AND OTHER INTANGIBLES - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 15, 2016	Jun. 30, 2012
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 28,100	$ 28,100
Amortization expense	3,593	4,403	$ 4,896
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	51,664	51,664
Amortization expense	1,100	1,700	2,000
Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	24,465	24,465			$ 24,500
Amortization expense	2,300	2,500	2,800
Customer Relationships [Member] | Property, Liability and Casualty Insurance Product Line [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	1,067	1,067
Amortization expense	$ 200	$ 200	$ 100
Doral Bank Transaction Member [Member] | Customer Relationships [Member] | Property, Liability and Casualty Insurance Product Line [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross				$ 1,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 1,100