FAIR VALUE - IMPAIRED LOANS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Impaired loans      
Carrying amount of loans measured at fair value $ 31,268 $ 39,980 $ 53,620
Valuation allowance (4,925) (5,427) (5,564)
Nonrecurring basis      
Impaired loans      
Total fair value 7,864 9,008  
Provision for impairment on loan, lease and other losses      
Provision for Impaired Loans Collateral Dependent 552 88 $ 729
Fair Value, Inputs, Level 3 | Nonrecurring basis      
Impaired loans      
Carrying amount of loans measured at fair value 6,963 8,162  
Estimated selling costs considered in carrying amount 936 946  
Valuation allowance (35) (100)  
Total fair value $ 7,864 $ 9,008