SERVICING RIGHTS - Schedule of Servicing Rights (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Transfers and Servicing [Abstract]
Mortgage servicing rights, at fair value	$ 62,676	$ 52,567	$ 49,939	$ 40,837	$ 34,198	$ 19,082
SBA servicing rights, at cost	1,167	$ 1,083	788	$ 809	$ 744	$ 484
Total	$ 63,843		$ 50,727