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SHAREHOLDERS' EQUITY (DEFICIT) - STOCK BASED COMPENSATION (Details) - 2009 Plan - Stock options, all inclusive recipients - shares
3 Months Ended
Jan. 25, 2015
Mar. 31, 2017
Dec. 31, 2014
Jun. 18, 2009
Stock-based compensation        
Shares authorized for issue under the plan     978,655 55,971
Vesting period   3 years    
Expiration period   7 years    
Additional shares authorized 1,072,879      
Shares available for future grant (in shares)   1,047,882