Share-Based Compensation - Unrecognized Share-based Compensation Expense (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total unrecognized share-based compensation expense	$ 13,536
Weighted Average Amortization Period	3 years 3 months 10 days
Time-Based Restricted Stock Units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized expense, restricted stock	$ 8,059
Weighted Average Amortization Period	3 years 5 months 15 days
Stock Options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized expense, stock options	$ 2,710
Weighted Average Amortization Period	3 years 6 months
Performance-Based Restricted Stock Units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized expense, restricted stock	$ 2,767
Weighted Average Amortization Period	2 years 6 months