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DEFERRED COMPENSATION ARRANGEMENTS (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
DEFERRED COMPENSATION ARRANGEMENTS    
Amount accrued $ 2,636 $ 2,167
Deferred compensation arrangements    
Amount accrued included in accrued liabilities 469 $ 430
Supplemental Executive Retirement Plan    
Deferred compensation arrangements    
Amount that would be contributed to Supplemental Executive Retirement Plan in event of death, disability, or termination without cause for certain key executives $ 308