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SIGNIFICANT ACCOUNTING POLICIES (Summary of Product Warranty Costs) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Beginning balance $ 573 $ 481
Provision for warranties 130 421
Charges against warranties (154) (329)
Ending balance 426 573
Less: long term portion (37) (123)
Current portion $ 389 $ 450