OTHER REAL ESTATE OWNED- Other real estate owned (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Real Estate And Foreclosed Assets [Line Items]
OREO	$ 83,060	$ 101,626
Other Real Estate Owned [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	83,060	101,626
Other Real Estate Owned [Member] | Residential [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	32,418	46,912
Other Real Estate Owned [Member] | Commercial [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	44,356	47,271
Other Real Estate Owned [Member] | Commercial [Member] | Construction [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	$ 6,286	$ 7,443