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Stock-Based Compensation - Additional Information (Details)
shares in Thousands
6 Months Ended
Jun. 30, 2019
trading_day
$ / shares
shares
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance shares entitlement of original award grant 0.00%
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance shares entitlement of original award grant 200.00%
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted (in shares) | shares 1,265
Weighted average grant date fair value (in dollars per share) | $ / shares $ 22.49
Restricted Stock Units (RSUs) | Graded vesting after year one of service period  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units vest on a granted schedule 25.00%
Restricted Stock Units (RSUs) | Graded vesting after year two of service period  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units vest on a granted schedule 25.00%
Restricted Stock Units (RSUs) | Graded vesting after year three of service period  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units vest on a granted schedule 50.00%
Performance Shares  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting term 3 years
Performance Shares | Total Revenue  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance metrics, weighted performance in share 25.00%
Performance Shares | Free Cash Flow  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance metrics, weighted performance in share 25.00%
Performance Shares | Absolute Share Price  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance metrics, weighted performance in share 50.00%
Performance Shares | Performance-Based  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted (in shares) | shares 708
Weighted average grant date fair value (in dollars per share) | $ / shares $ 22.49
Performance metrics, weighted performance in share 50.00%
Vesting term 3 years
Performance share maximum overachievement 100.00%
Performance Shares | Market-Based  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted (in shares) | shares 708
Weighted average grant date fair value (in dollars per share) | $ / shares $ 16.16 [1]
Performance metrics, weighted performance in share 50.00%
Vesting term 3 years
Total number of trading days of performance period | trading_day 20
[1]
The weighted average of fair values used to record compensation expense as determined by the Monte Carlo simulation.