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LEASES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Total future minimum lease payments for noncancelable operating leases      
2016 $ 12,160    
2017 8,735    
2018 6,623    
2019 5,025    
2020 3,557    
Thereafter 5,584    
Rental expense $ 16,703 $ 18,103 $ 18,642