STOCK-BASED COMPENSATION (Tables) |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock-based Compensation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of restricted stock unit activity |
A summary of restricted stock unit activity for the six months ended June 30, 2018 is as follows (each restricted stock unit represents the right to receive one share of the Company's common stock):
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| Summary of information of stock options outstanding and exercisable |
The following table presents information relating to all stock options outstanding and exercisable at June 30, 2018:
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