MORTGAGE BANKING ACTIVITIES - Summary of Activities in Reserve for Loss Reimbursements on Sold Loans (Detail) - Representations and Warranties Obligations and Corporate Guarantees - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	$ 10,438	$ 9,411	$ 9,700	$ 8,303
Provision for loan repurchases	1,241	716	2,471	3,617
Utilization of reserve for loan repurchases	(310)	(1,029)	(802)	(2,822)
Balance at end of period	$ 11,369	$ 9,098	$ 11,369	$ 9,098