XML 67 R53.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Stockholders' Equity (Summary of Time-Based RSUs Activity) (Details) - Time-Based Restricted Stock Units (RSUs) [Member]
shares in Thousands
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of shares, outstanding at December 31, 2018 | shares 371
Number of shares, granted | shares 900
Number of shares, vested | shares (127)
Number of shares, forfeited | shares (58)
Number of shares, Unvested outstanding at December 31, 2019 | shares 1,086
Weighted average grant date fair value, outstanding at December 31, 2018 | $ / shares $ 3.20
Weighted average grant date fair value, granted | $ / shares 7.06
Weighted average grant date fair value, vested | $ / shares 4.35
Weighted average grant date fair value, forfeited | $ / shares 5.86
Weighted average grant date fair value, Unvested outstanding at December 31, 2019 | $ / shares $ 6.12