Stock-Based Compensation - Summary of Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Service-Based RSUs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	$ 588	$ 580	$ 2,013	$ 1,939
Performance-Based RSUs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	383	472	1,942	123
Cash Settled Awards
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	16	67	151	102
RSUs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	987	1,119	4,106	2,164
Income tax benefit	227	257	945	497
Net expense	$ 760	$ 862	$ 3,161	$ 1,667