MORTGAGE SERVICING RIGHTS - Balance of loans serviced for others and fair value of mortgage servicing rights (Details) - Balance of loans serviced for others and fair value of mortgage servicing rights - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Residential mortgage loans serviced for others	$ 135,831	$ 143,244
Fair value of mortgage servicing rights	$ 1,383	$ 1,638