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SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Significant Accounting Policies And Practices [Line Items]    
Income tax deficiencies $ 1,938 $ 5,795
Accounting Standards Update 2016-09 [Member]    
Significant Accounting Policies And Practices [Line Items]    
Increase in weighted average number of diluted common shares outstanding 18,447  
Decrease in cash provided by operating activities $ (100)  
Income tax deficiencies $ 100