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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Estimated future operating lease expense      
2016 $ 1,840    
2017 1,338    
2018 1,062    
2019 719    
2020 480    
Thereafter 1,852    
Total 7,291    
Rental expense      
Rental expense $ 1,946 $ 1,976 $ 1,248
Severance Benefit Agreements      
Rental expense      
Period of specified benefits to key employees Upon the subsequent severance of employment 24 months