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SUPPLEMENTARY BALANCE SHEET INFORMATION (Schedule of Other Long-Term Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
SUPPLEMENTARY BALANCE SHEET INFORMATION [Abstract]    
Long-term tax accrual $ 871 $ 1,174
Deferred revenue 15 32
Other 3,092 3,973
Other long-term liabilities $ 3,978 $ 5,179