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Stock-Based Compensation - Restricted Stock, Restricted Stock Units, and Performance Units Narrative (Details)
12 Months Ended
Dec. 31, 2020
Performance-based restricted stock units  
Stock-based payment awards  
Dividend yield (as a percent) 0.00%
Performance-based restricted stock units, Market conditions  
Stock-based payment awards  
Vesting period 3 years
Restricted stock, restricted stock units, performance-based restricted stock units, cash-settled restricted stock units and cash-settled performance units | First anniversary vesting  
Stock-based payment awards  
Vesting percentage 33.33%
Vesting period 1 year
Restricted stock, restricted stock units, performance-based restricted stock units, cash-settled restricted stock units and cash-settled performance units | Second anniversary vesting  
Stock-based payment awards  
Vesting percentage 33.33%
Vesting period 1 year
Restricted stock, restricted stock units, performance-based restricted stock units, cash-settled restricted stock units and cash-settled performance units | Third anniversary vesting  
Stock-based payment awards  
Vesting percentage 33.33%
Vesting period 1 year