SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets and Goodwill
Goodwill	$ 18,480	$ 17,779	$ 17,779	$ 17,779
Buildings and leasehold improvements | Minimum
Premises and Equipment
Estimated useful lives	7 years
Buildings and leasehold improvements | Maximum
Premises and Equipment
Estimated useful lives	40 years
Furniture, fixtures and equipment | Minimum
Premises and Equipment
Estimated useful lives	3 years
Furniture, fixtures and equipment | Maximum
Premises and Equipment
Estimated useful lives	10 years