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, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Balance of loans serviced for others and fair value of mortgage servicing rights
Residential mortgage loans serviced for others	$ 143,244	$ 149,388
Fair value of mortgage servicing rights	$ 1,638	$ 1,661