SHAREHOLDERS EQUITY - Stock based compensation - Stock Options (Details) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Stock Options | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Number of options forfeited, cancelled or terminated | 126,767 | |
Stock-based compensation expense | $ 0.5 | $ 0.8 |
Unrecognized stock-based compensation expense | $ 0.6 | |
Cost is expected to be recognized over a weighted-average period | 1 year 3 months | |
Plan 2016 | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Number of shares available for issuance | 697,138 | |
Maximum number of shares eligible to be granted after modifications to the plan | 1,163,085 | |
2008 Plan | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Number of options forfeited, cancelled or terminated | 465,947 | |
Amount of consideration paid to the company upon plan modification | $ 0.0 |