The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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GOODWILL AND OTHER INTANGIBLES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Feb. 15, 2016	Jun. 30, 2012
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 28,100		$ 28,100		$ 28,100
Amortization expense			2,731	$ 3,325
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	51,664		51,664		51,664
Amortization expense	300	$ 400	900	1,300
Customer Relationships [Member] \| Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	24,465		24,465		24,465		$ 24,500
Amortization expense	600	600	1,700	1,900
Customer Relationships [Member] \| Insurance Customer Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	1,067		1,067		$ 1,067
Amortization expense	38	$ 38	100	$ 100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						$ 1,100
Doral Bank Transaction Member [Member] \| Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 3,300		$ 3,300