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EMPLOYEE STOCK OPTIONS, RESTRICTED STOCK AWARD PLAN AND 401(k) - Weighted-Average Assumptions Used for Options (Details) - April 20, 2017
12 Months Ended
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk free interest rate 1.78%
Expected life (years) 6 years 6 months
Dividend yield 0.00%
Volatility 94.00%