FAIR VALUE MEASUREMENTS - General information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Loans Held for Sale
Other information
Period of originated loans within which they are transferred or sold	60 days
Maximum | Pledged securities
Other information
Maximum term of maturity of investments	90 days
Maximum | Loans Held for Investment
Other information
Investment period for loans held for investment	3 years
Level 3 | Loans Held for Investment
Other information
Credit-related adjustments	$ 0	$ 0