XML 100 R81.htm IDEA: XBRL DOCUMENT v3.19.1
COMMON STOCK AND STOCK INCENTIVE PLANS - Stock Option Activity (Details) - 2017 Equity Incentive Plan - $ / shares
shares in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Number of shares outstanding    
Options Outstanding at the beginning of the period (in shares) 244 605
Options exercised (in shares) (35) (52)
Options forfeited or expired (in shares) (3) (309)
Options Outstanding at the end of the period (in shares) 206 244
Weighted average exercise price    
Options Outstanding at the beginning of the period (in dollars per share) $ 2.26 $ 2.78
Options exercised (in dollars per share) 2.24 2.62
Options forfeited or expired (in dollars per share) 4.17 3.22
Options Outstanding at the end of the period (in dollars per share) $ 2.24 $ 2.26