Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED COMPENSATION - Narrative (Details)

v3.19.1
STOCK BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 01, 2019
Jan. 01, 2018
Jun. 21, 2017
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation       $ 0.2 $ 0.3
Compensation cost not yet recognized       $ 2.1  
Compensation cost not yet recognized (in years)       2 years  
Expected dividend yield       0.00% 0.00%
2014 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Increase in shares authorized (in shares) 1,378,432 1,385,366 1,000,000    
Percentage of outstanding stock   5.00%      
Number of shares available for issuance (in shares)       2,943,535  
Restricted stock units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unvested, aggregate intrinsic value       $ 0.8