XML 93 R82.htm IDEA: XBRL DOCUMENT v3.19.2
Stock-Based Compensation - Restricted Stock, Restricted Stock Units, and Performance Units Activity (Narratives) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Stock-Based Compensation      
Additional paid-in capital $ 3,182,247 $ 3,182,247 $ 3,177,982
Reclassification      
Stock-Based Compensation      
Additional paid-in capital (200) (200)  
Other current liabilities $ 200 $ 200  
Performance units      
Stock-Based Compensation      
Converted (in shares) 99,631    
Cash settled restricted stock units and cash settled performance units      
Stock-Based Compensation      
Non-vested awards at the end of the period (in shares) 451,000 451,000  
Restricted stock shares, restricted stock units and performance units      
Stock-Based Compensation      
Non-vested awards at the end of the period (in shares) 2,105,000 2,105,000  
Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units      
Stock-Based Compensation      
Non-vested awards at the end of the period (in shares) 2,556,000 2,556,000 1,728,000
Unrecognized compensation      
Expected unrecognized compensation cost related to unvested awards (in dollars) $ 18,500 $ 18,500  
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized   2 years 2 months 12 days