Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Exercise price range) (Details)

v3.10.0.1
STOCK-BASED COMPENSATION (Exercise price range) (Details)
shares in Thousands
 12 Months Ended
Dec. 31, 2018
$ / shares
shares
$2.75-$4.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) $ 3.62
Upper range limit (in dollars per share) $ 4.99
Outstanding (in shares) | shares 99
Outstanding, weighted average remaining contractual life (in years) 4 months
Outstanding, weighted average exercise price (in dollars per share) $ 3.62
Exercisable (in shares) | shares 99
Exercisable, weighted average remaining contractual life (in years) 4 months
Exercisable, weighted average exercise price (in dollars per share) $ 3.62
$5.00-$9.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 5.00
Upper range limit (in dollars per share) $ 9.99
Outstanding (in shares) | shares 4,419
Outstanding, weighted average remaining contractual life (in years) 3 years 10 months
Outstanding, weighted average exercise price (in dollars per share) $ 8.81
Exercisable (in shares) | shares 4,419
Exercisable, weighted average remaining contractual life (in years) 3 years 10 months
Exercisable, weighted average exercise price (in dollars per share) $ 8.81
$10.00-$14.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 10.00
Upper range limit (in dollars per share) $ 14.99
Outstanding (in shares) | shares 2,094
Outstanding, weighted average remaining contractual life (in years) 2 years 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 11.34
Exercisable (in shares) | shares 2,094
Exercisable, weighted average remaining contractual life (in years) 2 years 6 months
Exercisable, weighted average exercise price (in dollars per share) $ 11.34
$15.00-$19.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 15.00
Upper range limit (in dollars per share) $ 19.99
Outstanding (in shares) | shares 987
Outstanding, weighted average remaining contractual life (in years) 7 years
Outstanding, weighted average exercise price (in dollars per share) $ 19.31
Exercisable (in shares) | shares 987
Exercisable, weighted average remaining contractual life (in years) 7 years
Exercisable, weighted average exercise price (in dollars per share) $ 19.31
$20.00-$24.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 20.00
Upper range limit (in dollars per share) $ 24.99
Outstanding (in shares) | shares 1,717
Outstanding, weighted average remaining contractual life (in years) 5 years 1 month
Outstanding, weighted average exercise price (in dollars per share) $ 21.15
Exercisable (in shares) | shares 1,709
Exercisable, weighted average remaining contractual life (in years) 5 years 1 month
Exercisable, weighted average exercise price (in dollars per share) $ 21.13
$25.00-$29.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 25.00
Upper range limit (in dollars per share) $ 29.99
Outstanding (in shares) | shares 1,860
Outstanding, weighted average remaining contractual life (in years) 7 years
Outstanding, weighted average exercise price (in dollars per share) $ 26.86
Exercisable (in shares) | shares 1,297
Exercisable, weighted average remaining contractual life (in years) 6 years 7 months
Exercisable, weighted average exercise price (in dollars per share) $ 26.32
$30.00 - $44.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Lower range limit (in dollars per share) 30.00
Upper range limit (in dollars per share) $ 44.99
Outstanding (in shares) | shares 608
Outstanding, weighted average remaining contractual life (in years) 9 years 1 month
Outstanding, weighted average exercise price (in dollars per share) $ 43.76
Exercisable (in shares) | shares 88
Exercisable, weighted average remaining contractual life (in years) 8 years 11 months
Exercisable, weighted average exercise price (in dollars per share) $ 43.55