Accrued Payroll and Benefits - Schedule of Accrued Payroll and Benefits (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Accrued bonuses	$ 4,768	$ 5,416
Accrued paid time off	2,296	2,067
Accrued payroll	7,307	9,133
Accrued other	4,908	4,565
Total accrued payroll and benefits	$ 19,279	$ 21,181