MORTGAGE SERVICING RIGHTS (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]
Total loans serviced for others	$ 5,966,320	$ 5,644,509
Commercial FHA Mortgage Loans
Servicing Assets at Fair Value [Line Items]
Total loans serviced for others	3,880,686	3,811,066
Residential mortgage loans
Servicing Assets at Fair Value [Line Items]
Total loans serviced for others	$ 2,085,634	$ 1,833,443