DEPOSITS - Summary of Deposits Balance (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Interest Bearing Deposit [Member] | Minimum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	0.05%	0.10%
Interest Bearing Deposit [Member] | Maximum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	1.00%	1.06%
Savings Deposits [Member] | Minimum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	0.05%	0.05%
Savings Deposits [Member] | Maximum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	0.40%	0.70%
Certificate Of Deposits [Member] | Minimum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	0.10%	0.10%
Certificate Of Deposits [Member] | Maximum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	4.00%	5.05%
Brokered Certificate of Deposits [Member] | Minimum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	0.60%	0.45%
Brokered Certificate of Deposits [Member] | Maximum [Member]
Deposits [Line Items]
Deposits Stated Interest Rate	2.80%	2.80%