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	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingency Accrual [Roll Forward]
Balance at beginning of year	$ 8,303	$ 5,427	$ 3,485
Acquired in business combinations	0	0	314
Provision for loan repurchases	4,352	4,243	2,383
Change in estimates	846	0	0
Utilization of reserve for loan repurchases	(3,801)	(1,367)	(755)
Balance at end of year	$ 9,700	$ 8,303	$ 5,427

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

12 Months Ended

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Loss Contingency Accrual [Roll Forward]

Balance at beginning of year

$ 8,303

$ 5,427

$ 3,485

Acquired in business combinations

314

Provision for loan repurchases