XML 51 R45.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
STOCK-BASED COMPENSATION - Compensation Awards (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Stock options      
Number of outstanding options      
Balance at the beginning of the period (in shares) 1,237    
Granted (in shares) 0    
Exercised (in shares) (45)    
Released RSUs/RSAs (in shares) 0    
Forfeited (in shares) (105)    
Balance at the end of the period (in shares) 1,087 1,237  
Weighted-Average Exercise Price of Outstanding Options      
Balance at the beginning of the period (in dollars per share) $ 24.00    
Granted (in dollars per share) 0    
Exercised (in dollars per share) 12.27    
Released RSUs/RSAs (in shares) 0    
Forfeited (in dollars per share) 27.14    
Balance at the end of the period (in dollars per share) $ 24.18 $ 24.00  
Additional disclosures      
Aggregate intrinsic value of options outstanding $ 0.1    
Aggregate intrinsic value of options exercisable $ 0.1    
Weighted average remaining contractual term of options outstanding 2 years 10 months 20 days    
Weighted average remaining contractual term of options exercisable 2 years 10 months 21 days    
Total intrinsic value of options exercised $ 0.2 $ 0.4  
Total estimated fair value of options vested $ 0.0 $ 0.8 $ 3.8
RSUs and PSUs      
Number of outstanding RSUs and PSUs/RSAs and PSAs      
Balance at the beginning of the period (in shares) 105    
Granted (in shares) 81    
Exercised (in shares) 0    
Released RSUs and RSAs (in shares) (92)    
Forfeited (in shares) 0    
Balance at the end of the period (in shares) 94 105  
Weighted-Average Fair Value per Share at Grant      
Balance at the beginning of the period (in dollars per share) $ 15.54    
Granted (in dollars per share) 13.72    
Exercised (in dollars per share) 0    
Released RSUs and RSAs (in dollars per share) 15.55    
Forfeited (in dollars per share) 0    
Balance at the end of the period (in dollars per share) $ 13.94 $ 15.54  
RSAs and PSAs      
Number of outstanding RSUs and PSUs/RSAs and PSAs      
Balance at the beginning of the period (in shares) 77    
Granted (in shares) 53    
Exercised (in shares) 0    
Released RSUs and RSAs (in shares) (52)    
Forfeited (in shares) 0    
Balance at the end of the period (in shares) 78 77  
Weighted-Average Fair Value per Share at Grant      
Balance at the beginning of the period (in dollars per share) $ 15.37    
Granted (in dollars per share) 15.08    
Exercised (in dollars per share) 0    
Released RSUs and RSAs (in dollars per share) 16.43    
Forfeited (in dollars per share) 0    
Balance at the end of the period (in dollars per share) $ 14.46 $ 15.37  
RSUs      
Additional disclosures      
Total estimated fair value of equity instruments vested $ 1.4 $ 2.6 2.6
RSAs      
Additional disclosures      
Total estimated fair value of equity instruments vested $ 0.9 $ 7.6 $ 6.3