Employee Benefit Plans - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) executive	Dec. 31, 2020 USD ($)
Retirement Benefits [Abstract]
Number of executives participating in SERP | executive	2
Supplemental executive retirement plan	$ 20,833,000	$ 20,628,000
Employer contributions to benefit plans	0
Expected funding of the SERP in the current year	$ 0