REVENUE FROM CONTRACT WITH CUSTOMERS - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Contract liability	$ 2,314	$ 1,909	$ 2,314	$ 1,909	$ 2,395	$ 2,476	$ 1,990	$ 2,071
Revenue	156,102	164,769	324,951	327,493
Other non-interest income	11,505	9,916	19,131	18,866
Hurricane [Member]
Revenue from External Customer [Line Items]
Other non-interest income	5,000		5,000
Insurance commissions [Member]
Revenue from External Customer [Line Items]
Revenue	$ 100	$ 4	$ 3,300	$ 2,700