XML 26 R6.htm IDEA: XBRL DOCUMENT v3.21.1
Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Millions, $ in Millions
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Treasury Stock
Balance at beginning of period (shares) at Dec. 31, 2019   91.6        
Balance at beginning of period at Dec. 31, 2019 $ 882.6 $ 0.1 $ 1,675.9 $ 2.3 $ (695.7) $ (100.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under equity incentive plans (shares)   0.7        
Issuance of common stock under equity incentive plans 0.3   0.3      
Issuance of common stock for Employee Stock Purchase Plan 6.4   6.4      
Share-based compensation expense 23.9   23.9      
Net income 19.9       19.9  
Other comprehensive income, net of tax 1.4     1.4    
Balance at end of period (shares) at Mar. 31, 2020   92.3        
Balance at end of period at Mar. 31, 2020 934.5 $ 0.1 1,706.5 3.7 (675.8) (100.0)
Balance at beginning of period (shares) at Dec. 31, 2020   96.1        
Balance at beginning of period at Dec. 31, 2020 1,826.5 $ 0.1 2,125.3 3.2 (202.1) (100.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under equity incentive plans (shares)   0.6        
Issuance of common stock for Employee Stock Purchase Plan 8.7   8.7      
Share-based compensation expense 28.0   28.0      
Net income 40.3       40.3  
Other comprehensive income, net of tax (0.3)     (0.3)    
Balance at end of period (shares) at Mar. 31, 2021   96.7        
Balance at end of period at Mar. 31, 2021 $ 1,903.2 $ 0.1 $ 2,162.0 $ 2.9 $ (161.8) $ (100.0)